feat: add script for batcher contract deploy

Ticket: COIN-956

Author: mohitkh7

hardhat.config.ts

@@ -66,7 +66,7 @@ const config: HardhatUserConfig = {
       loggingEnabled: false
     },
     eth: {
-      url: `https://ultra-empty-sanctuary.quiknode.pro/${QUICKNODE_ETH_MAINNET_API_KEY}`,
+      url: `https://ethereum-rpc.publicnode.com`,
       accounts: [`${PRIVATE_KEY_FOR_V4_CONTRACT_DEPLOYMENT}`]
     },
     hteth: {

scripts/deployBatcherContract.ts

@@ -0,0 +1,68 @@
+import { ethers } from 'hardhat';
+const hre = require('hardhat');
+const fs = require('fs');
+
+async function main() {
+  const output = {
+    walletImplementation: '',
+    walletFactory: '',
+    forwarderImplementation: '',
+    forwarderFactory: '',
+    batcher: ''
+  };
+
+  const contractName = 'Batcher';
+  const transferGasLimit = '200000';
+
+  const Batcher = await ethers.getContractFactory(contractName);
+  const batcher = await Batcher.deploy(transferGasLimit);
+  await batcher.deployed();
+  output.batcher = batcher.address;
+  console.log('Batcher deployed at ' + batcher.address);
+
+  fs.writeFileSync('output.json', JSON.stringify(output));
+
+  // Wait 5 minutes. It takes some time for the etherscan backend to index the transaction and store the contract.
+  console.log('Waiting for 5 minutes before verifying.....');
+  await new Promise((r) => setTimeout(r, 1000 * 300));
+
+  console.log('Done waiting, verifying');
+  await verifyContract(contractName, batcher.address, [transferGasLimit]);
+  console.log('Contracts verified');
+}
+
+async function verifyContract(
+  contractName: string,
+  contractAddress: string,
+  constructorArguments: string[],
+  contract?: string
+) {
+  try {
+    const verifyContractArgs: {
+      address: string;
+      constructorArguments: string[];
+      contract?: string;
+    } = {
+      address: contractAddress,
+      constructorArguments: constructorArguments
+    };
+
+    if (contract) {
+      verifyContractArgs.contract = contract;
+    }
+
+    await hre.run('verify:verify', verifyContractArgs);
+  } catch (e) {
+    // @ts-ignore
+    // We get a failure API response if the source code has already been uploaded, don't throw in this case.
+    if (!e.message.includes('Reason: Already Verified')) {
+      throw e;
+    }
+  }
+  console.log(`Verified ${contractName} on Etherscan!`);
+}
+
+main().catch((error) => {
+  console.error(error);
+  process.exitCode = 1;
+});