add commitment publisher to SS

Author: LeoPatOZ

src/protocol/ISignalService.sol

@@ -44,8 +44,15 @@ interface ISignalService {
     /// @dev Signals are not deleted when verified, and can be
     /// verified multiple times by calling this function
     /// @param height This refers to the block number / commitmentId where the trusted root is mapped to
+    /// @param commitmentPublisher The address that published the commitment containing the signal.
     /// @param sender The address that originally sent the signal on the source chain
     /// @param value The signal value to verify
     /// @param proof The encoded value of the SignalProof struct
-    function verifySignal(uint256 height, address sender, bytes32 value, bytes memory proof) external;
+    function verifySignal(
+        uint256 height,
+        address commitmentPublisher,
+        address sender,
+        bytes32 value,
+        bytes memory proof
+    ) external;
 }