add erc20 deploy script

scripts/deploy_erc20.ts

@@ -0,0 +1,18 @@
+import { ethers } from "hardhat";
+import { pn } from "./utils";
+
+async function main() {
+  const CommunityERC20 = await ethers.getContractFactory("CommunityERC20");
+  const contract = await CommunityERC20.deploy("Test", "TEST", 100);
+
+  const instance = await contract.deployed();
+  const tx = instance.deployTransaction;
+  const rec = await tx.wait();
+  console.log("CommunityERC20 deployed. Gas used:", pn(rec.gasUsed));
+}
+// We recommend this pattern to be able to use async/await everywhere
+// and properly handle errors.
+main().catch((error) => {
+  console.error(error);
+  process.exitCode = 1;
+});