Cardano Updates

- Add is_empty() method to Env (len_without_is_empty)
- Allow type_complexity in builtin_curry_reducer
- Remove redundant iter cloning in script_context.rs

Operates identically to the test command, but prints out a coverage
report, using the new source map capabilities!

Adds a field to sourcemaps that map var's and lambdas to the variable
names that introduce them; this lets debuggers show original source variable
names in the environment!

Allows us to do compilation and codegen, but skip any optimizations that might screw with the execution codepath, making it easier to debug a contract

Thread SourceLocation through the code generation to all UPLC term
construction sites, including:
- Assignments and let bindings
- Boolean operators (and/or chains)
- Function application

This should avoid bugs with diverging implementations, the recurring
theme of this PR.

Spans aren't sufficient to actually track source location; we were
trying to match based on module, but inlining messes with that.

So, we'll pass the source file name in all the way through, and we
introduce a SourceLocation type for this.

- Add more source spans during code generation
- Reorder pipeline to ensure source maps survive optimization
- Unify the codegen paths to always use generic context

It doesn't do us much good to carry the source spans through the whole
compilation process, if optimizations just screw with the UPLC tree at
the end.

This ensures that the interning, shrinking, and other optimizations
carry through the relevant context.

This also fixes the order of operations to apply used functions before
optimization.

Exposes an interface to run the CEK machine one step at a time
(essentially just exporing a few functions);

More importantly, Now that we've added Context to terms, and propagated that through
compilation, when we *run* the machine, we have to erase the context
down to unit ().

This makes things like debugger support awkward, because as the machine
executes, the term being executed gets manipulated. That means to map it
back to the generated source maps, we'd need some kind of pattern
matching system.

So, instead if we update the Machine to be able to run generically over
context (i.e. preserve the context as we juggle the CEK machine), then
we can use that context to attach a post-order numbering to each node,
and use that to index into the source maps.

To that end, we add a context parameter to Value, BuiltinRuntime, and
Env.

Of note, we don't make Error generic over Context. While that might be
useful for better error messages on failure, it's a much bigger
refactor, and isn't critical for debugging steps; so for now, we just
erase the context when constructing errors, and provide a utility for
lifting Value<()> into the default context.

- Add SourceMap type for mapping UPLC node indices to source locations
- Add the ability to generate a sourcemap when building, either
  externally or in the blueprint json
- Supports exporting tests (useful as a source of complex examples)
- Add's a --list flag to make identifying what exactly to export easier

This now passes the location information we have down into the Term!

It's not *super* useful yet; the things generated by the compiler that
*should* be able to derive their span info from the things around them
aren't yet being provided; but it's a good start, all the tests pass!

For example, here's a little fibonacci test I put together:

=== Source code ===

          fn fib(n: Int) -> Int {
            if n < 2 {
              n
            } else {
              fib(n - 1) + fib(n - 2)
            }
          }

          test fib_test() {
            fib(10) == 55
          }

    === Term tree with source locations ===
    Apply (no span)
      Apply (no span)
        Builtin(EqualsInteger) (no span)
        Apply (no span)
          Apply (no span)
            Lambda(test_module_fib) (no span)
              Apply (no span)
                Lambda(test_module_fib) (no span)
                  Var(test_module_fib) @ 164..167 = "fib"
                Apply (no span)
                  Var(test_module_fib) (no span)
                  Var(test_module_fib) (no span)
            Lambda(__no_inline__) (no span)                                                 Lambda(test_module_fib) (no span)
                Lambda(n_id_0) (no span)
                  Force (no span)
                    Apply (no span)
                      Apply (no span)
                        Apply (no span)
                          Force (no span)
                            Builtin(IfThenElse) (no span)
                          Apply (no span)
                            Apply (no span)
                              Builtin(LessThanInteger) @ 42..47 = "n < 2"
                              Var(n_id_0) @ 42..43 = "n"
                            Constant(Integer(2)) (no span)
                        Delay (no span)
                          Var(n_id_0) @ 60..61 = "n"
                      Delay (no span)
                        Apply (no span)
                          Apply (no span)
                            Builtin(AddInteger) (no span)
                            Apply (no span)
                              Apply (no span)
                                Var(test_module_fib) @ 89..92 = "fib"                                         Var(test_module_fib) @ 89..92 = "fib"
                              Apply (no span)
                                Apply (no span)
                                  Builtin(SubtractInteger) @ 93..98 = "n
    - 1"
                                  Var(n_id_0) @ 93..94 = "n"
                                Constant(Integer(1)) (no span)                                          Apply (no span)
                            Apply (no span)
                              Var(test_module_fib) @ 102..105 = "fib"                                       Var(test_module_fib) @ 102..105 = "fib"
                            Apply (no span)
                              Apply (no span)
                                Builtin(SubtractInteger) @ 106..111 = "n
    - 2"
                                Var(n_id_0) @ 106..107 = "n"
                              Constant(Integer(2)) (no span)
          Constant(Integer(10)) (no span)
      Constant(Integer(55)) (no span)

Adds a new location field to Air and AirTree node variants, intended to
track the closest span in the source code that generated that node.
Initially set to empty spans, but then we can add in more and more
source coverage in future commits.

Adds a generic "Context" parameter that can be populated with data; any
methods which work with terms will preserve the context, meaning it
survives execution, optimization, etc.

For now, we default it to (), but this is foundational work for source
map support, because we can assign sourcemap locations as the context
during codegen.

Signed-off-by: KtorZ <[email protected]>

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v6...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [DeterminateSystems/nix-installer-action](https://github.com/determinatesystems/nix-installer-action) from 4 to 21.
- [Release notes](https://github.com/determinatesystems/nix-installer-action/releases)
- [Commits](https://github.com/determinatesystems/nix-installer-action/compare/v4...v21)

---
updated-dependencies:
- dependency-name: DeterminateSystems/nix-installer-action
  dependency-version: '21'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [dirs](https://github.com/soc/dirs-rs) from 4.0.0 to 6.0.0.
- [Commits](https://github.com/soc/dirs-rs/commits)

---
updated-dependencies:
- dependency-name: dirs
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [regex](https://github.com/rust-lang/regex) from 1.11.1 to 1.12.2.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/compare/1.11.1...1.12.2)

---
updated-dependencies:
- dependency-name: regex
  dependency-version: 1.12.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [rayon](https://github.com/rayon-rs/rayon) from 1.10.0 to 1.11.0.
- [Changelog](https://github.com/rayon-rs/rayon/blob/main/RELEASES.md)
- [Commits](https://github.com/rayon-rs/rayon/compare/rayon-core-v1.10.0...rayon-core-v1.11.0)

---
updated-dependencies:
- dependency-name: rayon
  dependency-version: 1.11.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [tracing](https://github.com/tokio-rs/tracing) from 0.1.43 to 0.1.44.
- [Release notes](https://github.com/tokio-rs/tracing/releases)
- [Commits](https://github.com/tokio-rs/tracing/compare/tracing-0.1.43...tracing-0.1.44)

---
updated-dependencies:
- dependency-name: tracing
  dependency-version: 0.1.44
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.140 to 1.0.148.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.140...v1.0.148)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-version: 1.0.148
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>