feat(eth-contracts): add multisig to TokenLockerV2 and CKBChainV2

[cosinlink]

• add multisig to TokenLockerV2 contract based on TokenLocker
• add new tests to TokenLockerV2
• add multisig to CKBChainV2 contract based on CKBChain
• add new tests to CKBChainV2
• add solidity-coverage to generate coverage reports for eth-contracts
• upload coverage reports of eth-contracts to codecov in ci

[codecov-io]

Codecov Report

Merging #87 (16ec322) into main (6b1a289) will increase coverage by 52.97%.
The diff coverage is 69.49%.

@@            Coverage Diff             @@
##            main      #87       +/-   ##
==========================================
+ Coverage   8.22%   61.20%   +52.97%     
==========================================
  Files         28       14       -14     
  Lines       4290      750     -3540     
  Branches       0      130      +130     
==========================================
+ Hits         353      459      +106     
+ Misses      3937      291     -3646     

Impacted Files	Coverage Δ
eth-contracts/contracts/TokenLocker.sol	52.63% <ø> (ø)
eth-contracts/contracts/libraries/Blake2b.sol	50.00% <ø> (ø)
eth-contracts/contracts/TokenLockerV2.sol	57.14% <57.14%> (ø)
...th-contracts/contracts/libraries/MultisigUtils.sol	80.00% <80.00%> (ø)
eth-contracts/contracts/CKBChainV2.sol	66.45% <94.44%> (ø)
.../eth-recipient-typescript-lib/src/adapter/chain.rs
...ontracts/types/src/generated/eth_recipient_cell.rs
...eth-light-client-lockscript-lib/src/adapter/mod.rs
...s/lib/eth-bridge-lockscript-lib/src/adapter/mod.rs
...ib/eth-recipient-typescript-lib/src/adapter/mod.rs
... and 37 more

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[cryptowen]

The signature of the add_header function is AddHeaders(bytes data, bytes signatures), but the hash we used here is AddHeaders(bytes data)

[cosinlink]

In eip-712, when calc TYPEHASH, the signature of the function should not consider the signatures or r, s, v paramters, I think this is also the norm.