adding basic user controller and model as well as updating user route

api/bin/www.js

@@ -6,9 +6,15 @@
 
 
 import debugLib from 'debug';
+import dotenv from 'dotenv';
 import http from 'http';
+import mongoose from 'mongoose';
 import app from '../app.js';
 const debug = debugLib('api:server');
+dotenv.config({path: 'bin/.env'});
+
+mongoose
+  .connect(process.env.DB_CONNECTION).then(() => console.log('DB connection successful!'));
 
 /**
  * Get port from environment and store in Express.