Make BEEFY able to generate data needed for Web3Sum proof generation

[drskalman]

This is an epic issue tracking the progress to make Substrate client to be able to generate all necessary data for a Web3Sum relay node so it is able to generate a succinct proof for state of a Substrate chain. The remaining steps are the following:

• Implement BLS Core Crypto: BLS Core Crypto attempt #2 paritytech/substrate#13618
• Make BLS primitives generic over the signature scheme: Support for multiple signature scheme for BEEFY primitves paritytech/substrate#14373
• Implement (ECDSA,BLS) crypto scheme: Paired-key Crypto Scheme paritytech/polkadot-sdk#1705
• Implement Application crypto layer for (ECDSA, BLS): Application Crypto and BEEFY Support for paired (ECDSA,BLS) crypto paritytech/polkadot-sdk#1815
• Make (ECDSA,BLS) crypto scheme to be able to sign with costum hasher: 2066.
• Make BEEFY keystore be able to sign and verify (ECDSA,BLS): Make BEEFY client keystore generic over BEEFY AuthorityId type paritytech/polkadot-sdk#2258.
• Make the rest of BEEFY client generic over Keystore type so it could deal and gossip (ECDSA,BLS) signature: Beefy client generic on aduthority Id paritytech/polkadot-sdk#1816 (need to be rebased to Make BEEFY client keystore generic over BEEFY AuthorityId type paritytech/polkadot-sdk#2258 when it gets merged).
• Make validators sign the Web3Sum commitment to next validator set and include it in BEEFY payload.