chore: move add tally results args struct to interface

packages/contracts/contracts/Tally.sol

@@ -28,28 +28,6 @@
     bool flag;
   }
 
-  /// @notice tally result args
-  struct AddTallyResultsArgs {
-    /// @param voteOptionIndices Vote option index.
-    uint256[] voteOptionIndices;
-    /// @param tallyResults The results of vote tally for the recipients.
-    uint256[] tallyResults;
-    /// @param tallyResultProofs Proofs of correctness of the vote tally results.
-    uint256[][][] tallyResultProofs;
-    /// @param totalSpent spent field retrieved in the totalSpentVoiceCredits object
-    uint256 totalSpent;
-    /// @param totalSpentSalt spent salt
-    uint256 totalSpentSalt;
-    /// @param tallyResultSalt the respective salt in the results object in the tally.json
-    uint256 tallyResultSalt;
-    /// @param newResultsCommitment The salted commitment of the vote tally for this batch of leaves plus the vote tally from currentResults
-    uint256 newResultsCommitment;
-    /// @param spentVoiceCreditsHash hashLeftRight(number of spent voice credits, spent salt)
-    uint256 spentVoiceCreditsHash;
-    /// @param perVOSpentVoiceCreditsHash hashLeftRight(merkle root of the no spent voice credits per vote option, perVOSpentVoiceCredits salt)
-    uint256 perVOSpentVoiceCreditsHash;
-  }
-
   /// @notice The commitment to the tally results. Its initial value is 0, but after
   /// the tally of each batch is proven on-chain via a zk-SNARK, it should be
   /// updated to:
@@ -390,43 +368,43 @@
    * @notice Add and verify tally results by batch.
    * @param args add tally result args
    */
-  function addTallyResults(AddTallyResultsArgs calldata args) public virtual onlyOwner {
+  function addTallyResults(ITally.AddTallyResultsArgs calldata args) public virtual onlyOwner {
     if (!isTallied()) {
       revert VotesNotTallied();
     }
 
     (, , , uint8 voteOptionTreeDepth) = poll.treeDepths();
     uint256 voteOptionsLength = args.voteOptionIndices.length;
 
     for (uint256 i = 0; i < voteOptionsLength; ) {
       addTallyResult(
         args.voteOptionIndices[i],
         args.tallyResults[i],
         args.tallyResultProofs[i],
         args.tallyResultSalt,
         args.spentVoiceCreditsHash,
         args.perVOSpentVoiceCreditsHash,
         voteOptionTreeDepth
       );
 
       unchecked {
         i++;
       }
     }
 
     bool verified = verifySpentVoiceCredits(
       args.totalSpent,
       args.totalSpentSalt,
       args.newResultsCommitment,
       args.perVOSpentVoiceCreditsHash
     );
 
     if (!verified) {
       revert IncorrectSpentVoiceCredits();
     }
 
     totalSpent = args.totalSpent;
   }
 
   /**
    * @dev Add and verify tally votes and calculate sum of tally squares for alpha calculation.

packages/contracts/contracts/interfaces/ITally.sol

@@ -4,6 +4,28 @@ pragma solidity ^0.8.10;
 /// @title ITally
 /// @notice Tally interface
 interface ITally {
+  /// @notice tally result args
+  struct AddTallyResultsArgs {
+    /// @param voteOptionIndices Vote option index.
+    uint256[] voteOptionIndices;
+    /// @param tallyResults The results of vote tally for the recipients.
+    uint256[] tallyResults;
+    /// @param tallyResultProofs Proofs of correctness of the vote tally results.
+    uint256[][][] tallyResultProofs;
+    /// @param totalSpent spent field retrieved in the totalSpentVoiceCredits object
+    uint256 totalSpent;
+    /// @param totalSpentSalt spent salt
+    uint256 totalSpentSalt;
+    /// @param tallyResultSalt the respective salt in the results object in the tally.json
+    uint256 tallyResultSalt;
+    /// @param newResultsCommitment The salted commitment of the vote tally for this batch of leaves plus the vote tally from currentResults
+    uint256 newResultsCommitment;
+    /// @param spentVoiceCreditsHash hashLeftRight(number of spent voice credits, spent salt)
+    uint256 spentVoiceCreditsHash;
+    /// @param perVOSpentVoiceCreditsHash hashLeftRight(merkle root of the no spent voice credits per vote option, perVOSpentVoiceCredits salt)
+    uint256 perVOSpentVoiceCreditsHash;
+  }
+
   /// @notice Verify the number of spent voice credits per vote option from the tally.json
   /// @param _voteOptionIndex the index of the vote option where credits were spent
   /// @param _spent the spent voice credits for a given vote option index