Cardano Updates

Add cross-ecosystem post-quantum planning context

Overview of PQC schemes

fix: handle CIP-0129 minimal encoding of gov_action_id with cert_index 0

When peers have conflicting advertisement orders for TXs it is possible
for them to form a dependancy loop.

For example peer A has tx id 1 but requires tx id 0 to submit, peer B has
txid 2 but requires tx id 1 to submit, peer C has txid 0 but requires
txid 2 before it can submit.

We break this loop by introducing a inflightTimeout. When a peer has
spent that much time unable to get the TX into the mempool it will bump
the new currentMaxInflightMultiplicity limit. This will allow another
peer to issue a new request for the TX.

cardano-cli at runtime fails with "liblmdb.so.0: cannot open shared
object file" — the lmdb runtime lib isn't picked up from the cli
image's /usr/local/lib via the COPY. Sidecar happens to work; this
image's package set was leaner and didn't pull lmdb transitively.

The new self-classifying details I added in iter 3 caught it
immediately:
  last_err = "cardano-cli: error while loading shared libraries:
              liblmdb.so.0: cannot open shared object file"
  last_rc  = 127

Add liblmdb0 explicitly. Also add netbase for parity with sidecar
(/etc/services for netcat-openbsd hostname resolution etc).

Bump v2 → v3 to force rebuild.

Instead of a placeholder for PerasCert we introduce a ShortByteString.
This is needed so we can apply and test actual code for working with
certificates.

This is a temporary step, because the ultimate goal is to keep real
PerasCert in ledger repository. But in the meantime it's much easier
to keep all relevant code in the consensus repository and move everything
to the ledger once the types stabilize.

Deserialisation of the block was changed now we always expect 5 components
in the BlockBody group and return empty cert only if the last group contain
VNil

WIP

refactor: create internal crate for Merkle tree and map

Signed-off-by: Eric Torreborre <[email protected]>