Creating a config folder and moving the ‘env’ files

src/database/config/db.config.js

@@ -1,6 +1,6 @@
 // Load environment variables from .env file
 const appEnv = process.env.APP_ENV || 'development';
-require('dotenv').config({ path: `.env.${appEnv}` });
+require('dotenv').config({ path: `config/env/.env.${appEnv}` });
 
 module.exports = {
     "development": {