fix(spec): ABCI Spec missing field in ExtendedVoteInfo and VoteInfo #4458
Description
ExtendedVoteInfo contains a list of signatures that signed the associated vote extensions (v1.x and v0.38.x).
This information is missing from the spec (v1.x and v0.38.x).
Additionally, SignedLastBlock was replaced as well with a BlockID and the spec needs to be updated with this information. This is true for both VoteInfo and ExtendedVoteInfo
This needs to be updated in v0.38.x, v1.x and main.