Merge branch '6-configure-mongodb-connection' into 'main'

Resolve "Configure MongoDB Connection"

Closes #6

See merge request !4

mongodb.js

+const mongoose = require('mongoose');
+
+// Function to connect to MongoDB using Mongoose and create collections
+async function connectDB() {
+  try {
+    // Connect using the MongoDB URI from environment variables
+    const conn = await mongoose.connect(process.env.MONGO_URI || "mongodb://127.0.0.1:27017/todo_app");
+    console.log(`MongoDB connected: ${conn.connection.host}`);
+  } catch (err) {
+    console.error(`Error: ${err.message}`);
+    process.exit(1); // Exit the process with failure if the connection fails
+  }
+}
+
+module.exports = connectDB;
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