feat: add voteWithData and voteWithDataBatch (#62)

[Tranquil-Flow]

Summary

• Adds voteWithData(points, data) for direct voting with arbitrary downstream data (no EIP-712 signature required)
• Adds voteWithDataBatch(voters, points, data) with onlyOwner for keeper/relayer batch flows
• Adds castVoteWithSignatureAndParams() for signature-based voting with additional parameters
• Introduces _processVoteWithParams / _handleAdditionalVoteData hook pattern in AbstractVotingModule for downstream extensibility
• AlreadyVotedInCurrentCycle guard prevents double-counting in both single and batch paths
• 12 new tests covering all paths: events, vote recording, hook invocation, empty bytes, invalid points, already-voted revert, non-owner batch revert, duplicate voter in batch, signature+params

Closes #62

Test plan

• testVoteWithDataEmitsEvent — VoteWithData event emitted
• testVoteWithDataRecordsVote — vote distributions match points
• testVoteWithDataCallsHandleAdditionalVoteData — hook receives correct voter + data
• testVoteWithDataBatch — processes multiple voters atomically
• testVoteWithDataRevertsAlreadyVoted — revert on double vote
• testVoteWithDataBatchRevertsNonOwner — only owner can batch
• testVoteWithDataBatchRevertsDuplicateVoter — catches duplicate in same batch
• testCastVoteWithSignatureAndParams — signature path with additional data
• Full suite: 191 tests pass