Bring back hardhat deployment scripts

packages/contracts-bedrock/tasks/genesis-l1.ts

+import fs from 'fs'
+
+import { ethers } from 'ethers'
+import { task, types } from 'hardhat/config'
+import { Genesis, State } from '@eth-optimism/core-utils'
+import '@eth-optimism/hardhat-deploy-config'
+
+task('genesis-l1', 'create a genesis config')
+  .addOptionalParam(
+    'outfile',
+    'The file to write the output JSON to',
+    'genesis.json'
+  )
+  .addOptionalParam(
+    'l1GenesisBlockTimestamp',
+    'Timestamp to embed in L1 genesis block, current time will be used if the timestamp is zero',
+    0,
+    types.int
+  )
+  .setAction(async (args, hre) => {
+    const { deployConfig } = hre
+    const alloc: State = {}
+
+    const l1GenesisBlockTimestamp =
+      args.l1GenesisBlockTimestamp === 0
+        ? Math.floor(Date.now() / 1000)
+        : args.l1GenesisBlockTimestamp
+
+    // Give each predeploy a single wei
+    for (let i = 0; i <= 0xff; i++) {
+      const buf = Buffer.alloc(2)
+      buf.writeUInt16BE(i, 0)
+      const addr = ethers.utils.hexConcat([
+        '0x000000000000000000000000000000000000',
+        ethers.utils.hexZeroPad(buf, 2),
+      ])
+      alloc[addr] = {
+        balance: '0x1',
+      }
+    }
+
+    const accounts = [
+      '0x14dC79964da2C08b23698B3D3cc7Ca32193d9955',
+      '0x15d34AAf54267DB7D7c367839AAf71A00a2C6A65',
+      '0x1CBd3b2770909D4e10f157cABC84C7264073C9Ec',
+      '0x23618e81E3f5cdF7f54C3d65f7FBc0aBf5B21E8f',
+      '0x2546BcD3c84621e976D8185a91A922aE77ECEc30',
+      '0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC',
+      '0x70997970C51812dc3A010C7d01b50e0d17dc79C8',
+      '0x71bE63f3384f5fb98995898A86B02Fb2426c5788',
+      '0x8626f6940E2eb28930eFb4CeF49B2d1F2C9C1199',
+      '0x90F79bf6EB2c4f870365E785982E1f101E93b906',
+      '0x976EA74026E726554dB657fA54763abd0C3a0aa9',
+      '0x9965507D1a55bcC2695C58ba16FB37d819B0A4dc',
+      '0xBcd4042DE499D14e55001CcbB24a551F3b954096',
+      '0xFABB0ac9d68B0B445fB7357272Ff202C5651694a',
+      '0xa0Ee7A142d267C1f36714E4a8F75612F20a79720',
+      '0xbDA5747bFD65F08deb54cb465eB87D40e51B197E',
+      '0xcd3B766CCDd6AE721141F452C550Ca635964ce71',
+      '0xdD2FD4581271e230360230F9337D5c0430Bf44C0',
+      '0xdF3e18d64BC6A983f673Ab319CCaE4f1a57C7097',
+      '0xde3829a23df1479438622a08a116e8eb3f620bb5',
+      '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266',
+    ]
+
+    for (const account of accounts) {
+      alloc[ethers.utils.getAddress(account)] = {
+        balance:
+          '0x200000000000000000000000000000000000000000000000000000000000000',
+      }
+    }
+
+    const genesis: Genesis = {
+      config: {
+        chainId: deployConfig.l1ChainID,
+        homesteadBlock: 0,
+        eip150Block: 0,
+        eip150Hash: ethers.constants.HashZero,
+        eip155Block: 0,
+        eip158Block: 0,
+        byzantiumBlock: 0,
+        constantinopleBlock: 0,
+        petersburgBlock: 0,
+        istanbulBlock: 0,
+        muirGlacierBlock: 0,
+        berlinBlock: 0,
+        londonBlock: 0,
+        clique: {
+          period: deployConfig.l1BlockTime,
+          epoch: 30000,
+        },
+      },
+      nonce: deployConfig.l1GenesisBlockNonce,
+      timestamp: ethers.BigNumber.from(l1GenesisBlockTimestamp).toHexString(),
+      extraData: ethers.utils.hexConcat([
+        ethers.constants.HashZero,
+        deployConfig.cliqueSignerAddress,
+        ethers.utils.hexZeroPad('0x', 65),
+      ]),
+      gasLimit: deployConfig.l1GenesisBlockGasLimit,
+      difficulty: deployConfig.l1GenesisBlockDifficulty,
+      mixHash: deployConfig.l1GenesisBlockMixHash,
+      coinbase: deployConfig.l1GenesisBlockCoinbase,
+      alloc,
+      number: deployConfig.l1GenesisBlockNumber,
+      gasUsed: deployConfig.l1GenesisBlockGasUsed,
+      parentHash: deployConfig.l1GenesisBlockParentHash,
+      baseFeePerGas: deployConfig.l1GenesisBlockBaseFeePerGas,
+    }
+
+    fs.writeFileSync(args.outfile, JSON.stringify(genesis, null, 2))
+  })

packages/contracts-bedrock/tasks/index.ts

+import './genesis-l1'
+import './genesis-l2'
 import './deposits'
 import './rekey'
 import './rollup-config'