Add MainPage with bottom navigation and update app entry point

Author: winechit-dev

lib/app/app.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:tmdb_flutter/app/view/main_page.dart';
 import 'api/movie_api.dart';
 import 'cubit/home_cubit.dart';
 import 'view/home_page.dart';
@@ -17,7 +18,7 @@ class App extends StatelessWidget {
       ),
       home: BlocProvider(
         create: (context) => HomeCubit(MovieAPI()),
-        child: const HomePage(),
+        child: const MainPage(),
       ),
     );
   }

lib/app/view/app.dart

@@ -0,0 +1,48 @@
+import 'package:flutter/material.dart';
+import 'package:tmdb_flutter/app/view/favorites_page.dart';
+import 'package:tmdb_flutter/app/view/home_page.dart';
+
+class MainPage extends StatefulWidget {
+  const MainPage({super.key});
+
+  @override
+  State<MainPage> createState() => _MainPageState();
+}
+
+class _MainPageState extends State<MainPage> {
+  int _selectedIndex = 0;
+
+  final List<Widget> _pages = const [
+    HomePage(),
+    FavoritesPage(),
+  ];
+
+  void _onItemTapped(int index) {
+    setState(() {
+      _selectedIndex = index;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: _pages[_selectedIndex],
+      bottomNavigationBar: BottomNavigationBar(
+        items: const <BottomNavigationBarItem>[
+          BottomNavigationBarItem(
+            icon: Icon(Icons.home),
+            label: 'Home',
+          ),
+          BottomNavigationBarItem(
+            icon: Icon(Icons.favorite),
+            label: 'Favorites',
+          ),
+        ],
+        currentIndex: _selectedIndex,
+        selectedItemColor: Colors.pinkAccent,
+        unselectedItemColor: Colors.grey,
+        onTap: _onItemTapped,
+      ),
+    );
+  }
+}