Transition from buidler to hardhat

hardhat.config.js

@@ -0,0 +1,28 @@
+const fs = require('fs');
+const path = require('path');
+
+require("@nomiclabs/hardhat-truffle5");
+require("@nomiclabs/hardhat-solhint");
+require("solidity-coverage");
+
+for (const f of fs.readdirSync(path.join(__dirname, 'hardhat'))) {
+  require(path.join(__dirname, 'hardhat', f));
+}
+
+/**
+ * @type import('hardhat/config').HardhatUserConfig
+ */
+module.exports = {
+  solidity: "0.8.0",
+  settings: {
+    optimizer: {
+      enabled: false,
+      runs: 200,
+    },
+  },
+	networks: {
+    hardhat: {
+      blockGasLimit: 10000000,
+    },
+  },
+};