added to routes for the user auth

backend/db/connectDB.js

@@ -0,0 +1,11 @@
+import mongoose from "mongoose";
+
+export const connectDB = async () => {
+    try {
+        const conn = await mongoose.connect(process.env.MONGO_URI);
+        console.log(`MongoDB Connected: ${conn.connection.host}`);
+    } catch(error) {
+        console.log("Error connection to MongoDB: ", error.message);
+        process.exit(1);
+    }
+}