Cardano Updates

Signed-off-by: Sasha Bogicevic <[email protected]>

Replace locally-defined orphan `ToJSON`/`FromJSON` instances that
already exist in `Cardano.Network.OrphanInstances` (from the
`cardano-diffusion:orphan-instances` sublibrary) with imports of that
module:

- `TopologyP2P`: remove `FromJSON/ToJSON PeerTrustable`,
  `FromJSON/ToJSON (NetworkTopology UseBootstrapPeers PeerTrustable)`,
  and `FromJSON UseBootstrapPeers`; add `Cardano.Network.OrphanInstances ()`
  and `Ouroboros.Network.OrphanInstances ()` imports.

- `StateRep`: remove local `ToJSON/FromJSON NodeToNodeVersion`,
  `ToJSON/FromJSON NodeToClientVersion`, and `parseBoundedEnum`; add
  `Cardano.Network.OrphanInstances ()` import.

- `Tracers`: remove Show-based `ToJSON NodeToNodeVersionData` and
  `ToJSON NodeToClientVersionData` stubs; add
  `Cardano.Network.OrphanInstances ()` import.

Additionally fix two pre-existing issues in `Consensus.hs`:

- `deltaq`: use `toJSON gsv` (structured JSON via
  `Ouroboros.Network.OrphanInstances`) instead of `String . show`.

- `TraceDecisionEvent`: restore the `dtal >= DMaximum` conditional
  branch (replacing the reversed fold), using `forMachine DMaximum`
  for the verbose case.

In `Startup.hs`, fix `ConsensusNetworkVersionTuple` to emit proper
structured JSON for `nodeToClientVersion`/`nodeToNodeVersion` via
`ToJSON` from `Cardano.Network.OrphanInstances`, and fix the
`maxNodeToNode/ClientVersion` field to show only the version key
rather than the full `(key, value)` pair.

We used to need to call `cborTermVersionDataCodec` to get
`VersionDataCodec` from `CodecCBORTerm`.

The `VersionDataCodec` and `cborTermVersionDataCodec` is moved to
`ouroboros-network:api` library (`Ouroboros.network.CodecCBORTerm`
module).

`cardano-diffusion` provides both `nodeToNodeVersionDataCodec` and
`nodeToClientVersionDataCodec`.

This required a refactorisation in tests to get rid of some newtype
wrappers, however the semantics of all the tests is preserved.

The tests started to fail due to usage of version data codec which
doesn't satisfy round robin property on invalid version data in the
previous commit.

Exposed `nodeTo{Node,Client}VersionDataCodec` instead.