Align with Gateway contract errors

[isaacdecoded]

We need to align the transaction sender with the InputVerification error names/parameters:

error CoprocessorAlreadyVerified(uint256 zkProofId, address txSender, address signer);

error CoprocessorAlreadyRejected(uint256 zkProofId, address txSender, address signer);

This change was discussed in this PR but in the end we included the txSender address as parameter in the errors and used the names CoprocessorAlreadyVerified/CoprocessorAlreadyRejected instead of CoprocessorSignerAlreadyVerified/CoprocessorSignerAlreadyRejected

OTOH, regarding this discussion in this PR, we are introducing other error name/parameter changes that should be aligned also:

• In ICiphertextCommits.sol:
• • CoprocessorTxSenderAlreadyAdded -> error CoprocessorAlreadyAdded(bytes32 ctHandle, address txSender)
• In IMultichainAcl.sol:
• • CoprocessorAlreadyAllowed -> error CoprocessorAlreadyAllowedPublicDecrypt(bytes32 ctHandle, address txSender) or error CoprocessorAlreadyAllowedAccount(bytes32 ctHandle, address account, address txSender) (we have now specific custom errors for each use case)
• • CoprocessorAlreadyDelegated -> error CoprocessorAlreadyDelegated( uint256 chainId, DelegationAccounts delegationAccounts, address[] contractAddresses, address txSender )

cc @goshawk-3 @dartdart26 @RomanBredehoft