Added basic code to start flutter fire

lib/login.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+
+// Import the firebase_core plugin
+import 'package:firebase_core/firebase_core.dart';
+
+void main() {
+  WidgetsFlutterBinding.ensureInitialized();
+  runApp(App());
+}
+
+class App extends StatefulWidget {
+  _AppState createState() => _AppState();
+}
+
+class _AppState extends State<App> {
+  // Set default `_initialized` and `_error` state to false
+  bool _initialized = false;
+  bool _error = false;
+
+  // Define an async function to initialize FlutterFire
+  void initializeFlutterFire() async {
+    try {
+      // Wait for Firebase to initialize and set `_initialized` state to true
+      await Firebase.initializeApp();
+      setState(() {
+        _initialized = true;
+      });
+    } catch(e) {
+      // Set `_error` state to true if Firebase initialization fails
+      setState(() {
+        _error = true;
+      });
+    }
+  }
+
+  @override
+  void initState() {
+    initializeFlutterFire();
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    //Show error message if initialization failed
+    // if(_error) {
+    //   return SomethingWentWrong();
+    // }
+    //
+    // // Show a loader until FlutterFire is initialized
+    // if (!_initialized) {
+    //   return Loading();
+    // }
+
+    return App();
+  }
+}