Add an L2 deploy script for gas oracle contract

packages/contracts/deploy-l2/000-OVM_GasPriceOracle.deploy.ts

@@ -0,0 +1,24 @@
+/* Imports: External */
+import { DeployFunction } from 'hardhat-deploy/dist/types'
+
+/* Imports: Internal */
+import { getContractDefinition } from '../src'
+
+const deployFn: DeployFunction = async (hre: any) => {
+  const { deployments, getNamedAccounts } = hre
+  const { deploy } = deployments
+  const { deployer } = await getNamedAccounts()
+
+  const gasPriceOracle = getContractDefinition('OVM_GasPriceOracle', true)
+
+  await deploy('OVM_GasPriceOracle', {
+    contract: gasPriceOracle,
+    from: deployer,
+    args: [(hre as any).deployConfig.ovmSequencerAddress],
+    log: true,
+  });
+}
+
+deployFn.tags = ['OVM_GasPriceOracle']
+
+export default deployFn