Add gas reporter

Author: Mike-CZ

hardhat.config.ts

@@ -2,6 +2,7 @@ import { HardhatUserConfig } from 'hardhat/config';
 import * as dotenv from 'dotenv';
 import '@nomicfoundation/hardhat-toolbox';
 import 'hardhat-contract-sizer';
+import "hardhat-gas-reporter";
 import 'solidity-coverage';
 
 dotenv.config();
@@ -17,6 +18,11 @@ const config: HardhatUserConfig = {
       },
     },
   },
+  gasReporter: {
+    currency: 'USD',
+    enabled: !!(process.env.REPORT_GAS),
+    gasPrice: 50,
+  },
   contractSizer: {
     runOnCompile: true,
   },