🍱 Add app icon

✨ Multiple pages

lib/screens/home_screen.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+import 'calculator_home_page.dart';
+import 'about_page.dart';
+
+class HomeScreen extends StatefulWidget {
+  const HomeScreen({super.key});
+
+  @override
+  State<HomeScreen> createState() => _HomeScreenState();
+}
+
+class _HomeScreenState extends State<HomeScreen> {
+  int _selectedIndex = 0;
+
+  static const List<Widget> _widgetOptions = <Widget>[
+    CalculatorHomePage(),
+    AboutPage(),
+  ];
+
+  void _onItemTapped(int index) {
+    setState(() {
+      _selectedIndex = index;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: _widgetOptions.elementAt(_selectedIndex),
+      bottomNavigationBar: BottomNavigationBar(
+        items: const <BottomNavigationBarItem>[
+          BottomNavigationBarItem(
+            icon: Icon(Icons.calculate),
+            label: 'Calculator',
+          ),
+          BottomNavigationBarItem(icon: Icon(Icons.info), label: 'About'),
+        ],
+        currentIndex: _selectedIndex,
+        onTap: _onItemTapped,
+      ),
+    );
+  }
+}