add linea example (#34)

* deploy and init

* add linea example

* lint fix

* adaptation of Linea

contracts/dev-contracts/DummyZkLink.sol

@@ -33,8 +33,8 @@ contract DummyZkLink is IZkLink, OwnableUpgradeable, UUPSUpgradeable, Reentrancy
     }
 
     function syncL2Requests(uint256 _newTotalSyncedPriorityTxs) external payable {
-        bytes memory callData = abi.encode(msg.value, _newTotalSyncedPriorityTxs);
-        gateway.sendMessage{value: msg.value}(msg.value, callData);
+        bytes memory callData = abi.encode(0, _newTotalSyncedPriorityTxs);
+        gateway.sendMessage{value: msg.value}(0, callData);
     }
 
     function syncBatchRoot(

examples/linea/.env-sample

@@ -0,0 +1,21 @@
+# This is a sample .env file for use in local development.
+
+# Duplicate this file as .env here
+
+# Your Private key
+
+DEVNET_PRIVKEY="0x your key here"
+
+# Hosted Aggregator Node (JSON-RPC Endpoint). This is Linea Goerli Testnet, can use any Linea chain
+
+L2RPC="https://rpc.goerli.linea.build"
+
+# Ethereum RPC; i.e., for Goerli https://goerli.infura.io/v3/<your infura key>
+
+L1RPC=""
+
+# Linea chain name
+LINEA="LINEATEST"
+
+# Ethereum chain name
+ETHEREUM="GOERLI"

examples/linea/.gitignore

@@ -0,0 +1 @@
+.env

examples/linea/hardhat.config.js

@@ -0,0 +1,14 @@
+require('@nomicfoundation/hardhat-toolbox');
+require('./scripts/syncL2Requests');
+require('./scripts/syncBatchRoot');
+require('./scripts/setValidator');
+require('./scripts/changeFeeParams');
+
+const BaseConfig = require('../../hardhat.base.config');
+
+module.exports = Object.assign({}, BaseConfig, {
+  paths: {
+    cache: '../../cache',
+    artifacts: '../../artifacts',
+  },
+});