first start for arb bridge contracts

contracts/HATToken.sol

@@ -66,4 +66,6 @@ contract HATToken is IHATToken, ERC20Votes, ERC20Capped, Ownable {
         super._mint(account, amount);
     }
 
+
+
 }

contracts/HatTokenArbitrumBridgeL1.sol

@@ -0,0 +1,38 @@
+
+import "./HATToken.sol";
+import "@arbitrum/token-bridge-contracts/contracts/tokenbridge/ethereum/ICustomToken.sol";
+
+contract HATTokenArbitrumBridgeL1 is ICustomToken, HATToken {
+    /** functions for registring the token with the arbitrum bridge */
+    function isArbitrumEnabled() external view override returns (uint8) {
+        return uint8(0xb1);
+    }
+
+    function registerTokenOnL2(
+        address l2CustomTokenAddress,
+        uint256 maxSubmissionCostForCustomGateway,
+        uint256 maxSubmissionCostForRouter,
+        uint256 maxGasForCustomGateway,
+        uint256 maxGasForRouter,
+        uint256 gasPriceBid,
+        uint256 valueForGateway,
+        uint256 valueForRouter,
+        address creditBackAddress
+    ) public payable virtual override {
+        IL1CustomGateway(gateway).registerTokenToL2{ value: valueForGateway }(
+            l2CustomTokenAddress,
+            maxGasForCustomGateway,
+            gasPriceBid,
+            maxSubmissionCostForCustomGateway,
+            creditBackAddress
+        );
+
+        IGatewayRouter2(router).setGateway{ value: valueForRouter }(
+            gateway,
+            maxGasForRouter,
+            gasPriceBid,
+            maxSubmissionCostForRouter,
+            creditBackAddress
+        );
+    }
+}

contracts/HatTokenArbitrumBridgeL2.sol

@@ -0,0 +1,7 @@
+
+import "./HATToken.sol";
+import "@arbitrum/token-bridge-contracts/contracts/tokenbridge/arbitrum/IArbToken.sol";
+
+contract HATTokenArbitrumBridgeL2 is IArbToken, HATToken {
+    /** functions for registring the token with the arbitrum bridge */
+}