replace require with string with custom error

Author: Amxx

.github/workflows/checks.yml

@@ -70,8 +70,8 @@ jobs:
           submodules: recursive
       - name: Set up environment
         uses: ./.github/actions/setup
-      - run: rm foundry.toml
-      - uses: crytic/[email protected]
+      - run: Slither
+        uses: crytic/[email protected]
 
   codespell:
     runs-on: ubuntu-latest

contracts/crosschain/axelar/AxelarGatewaySource.sol

@@ -17,6 +17,8 @@ import {IERC7786GatewaySource} from "../interfaces/draft-IERC7786.sol";
 abstract contract AxelarGatewaySource is IERC7786GatewaySource, AxelarGatewayBase {
     using Strings for address;
 
+    error SendingValueNotSupported();
+
     /// @inheritdoc IERC7786GatewaySource
     function supportsAttribute(bytes4 /*selector*/) public pure returns (bool) {
         return false;
@@ -29,7 +31,7 @@ abstract contract AxelarGatewaySource is IERC7786GatewaySource, AxelarGatewayBas
         bytes calldata payload,
         bytes[] calldata attributes
     ) external payable returns (bytes32) {
-        require(msg.value == 0, "Value not supported");
+        require(msg.value == 0, SendingValueNotSupported());
         if (attributes.length > 0)
             revert UnsupportedAttribute(attributes[0].length < 0x04 ? bytes4(0) : bytes4(attributes[0][0:4]));