evm: Add sourceChain to MessageAttestedTo and TransferRedeemed events

Author: nvsriram

evm/src/interfaces/IManagerBase.sol

@@ -32,12 +32,13 @@ interface IManagerBase {
     }
 
     /// @notice Emitted when a message has been attested to.
-    /// @dev Topic0
-    ///      0x35a2101eaac94b493e0dfca061f9a7f087913fde8678e7cde0aca9897edba0e5.
+    /// @dev
+    ///
+    /// @param sourceChain The source chain.
     /// @param digest The digest of the message.
     /// @param transceiver The address of the transceiver.
     /// @param index The index of the transceiver in the bitmap.
-    event MessageAttestedTo(bytes32 digest, address transceiver, uint8 index);
+    event MessageAttestedTo(uint16 indexed sourceChain, bytes32 digest, address transceiver, uint8 index);
 
     /// @notice Emmitted when the threshold required transceivers is changed.
     /// @dev Topic0

evm/src/interfaces/INttManager.sol

@@ -56,10 +56,11 @@ interface INttManager is IManagerBase {
 
     /// @notice Emitted when a transfer has been redeemed
     ///         (either minted or unlocked on the recipient chain).
-    /// @dev Topic0
-    ///      0x504e6efe18ab9eed10dc6501a417f5b12a2f7f2b1593aed9b89f9bce3cf29a91.
+    /// @dev
+    ///
+    /// @param sourceChain The source chain.
     /// @param digest The digest of the message.
-    event TransferRedeemed(bytes32 indexed digest);
+    event TransferRedeemed(uint16 indexed sourceChain, bytes32 indexed digest);
 
     /// @notice Emitted when an outbound transfer has been cancelled
     /// @dev Topic0