Added backend folder structure.

Backend/index.js

@@ -0,0 +1,23 @@
+const server = require("./app.js");
+const dotenv = require("dotenv");
+const cloudinary = require("cloudinary").v2;
+const DB_connect = require("./Database/DB_connect.js");
+
+// dotenv Configuration
+dotenv.config({
+  path: "./.env",
+});
+
+cloudinary.config({
+  cloud_name: process.env.CLOUDINARY_CLOUD_NAME,
+  api_key: process.env.CLOUDINARY_API_KEY,
+  api_secret: process.env.CLOUDINARY_API_SECRET,
+});
+
+DB_connect();
+
+// Listening the port
+server.listen(process.env.PORT, () => {
+  console.log("Server is Running on ", process.env.PORT);
+  console.log("Frontend URI : ", process.env.FRONTEND_URI);
+});