Split Crypto into Crypto and HeaderCrypto

[yogeshsajanikar]

• Split Crypto class into Crypto (DSIGN, ADDRHASH) and HeaderCrypto (KES, VRF)
• Move HeaderCrypto into Cardano.Protocol
• Use PoolStakeVRF and GenesisVRF as a proxy to VRF in ledger code
• Parametrize TPrao protcol code with Crypto and HeaderCrypto Many functions are parametrized by Era and HeaderCrypto as Era implicitly implies Crypto (Crypto Era).
• ALl the ledger code is separated from header crypto (KES/VRF)
• Proxy VRFs are PoolStakeVRF and GenesisVRF

Description

• Added a small library 'cardano-protocol-core' to solve the problem with cabal (it does not handle dependencies at the component level, but does it at the cabal file level).
• It wasn't possible to remove 'AllowAmbiguousTypes' for most of the files where it was already there (too much change). I did manage to take care of some instances by adding "Proxy" types in the argument.
• The changes is to remove VRF, and KES from the Crypto and move it to a separate HeaderCrypto class.
• Added PoolstakeVRF and GenesisVRF as a proxy type for getting rid of precise VRF type in Hash key.

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated
• Any changes are noted in the CHANGELOG.md for affected package
• The version bounds in .cabal files are updated
• Code is formatted with fourmolu (use scripts/fourmolize.sh)
• Cabal files are formatted (use scripts/cabal-format.sh)
• hie.yaml has been updated (use scripts/gen-hie.sh)
• Self-reviewed the diff

[yogeshsajanikar]

• Fixing the formatting errors and build warnings