Simple NavigationBar and placeholder map view

lib/main.dart

@@ -3,6 +3,7 @@ import 'package:provider/provider.dart';
 
 import 'pages/flood_station_page.dart';
 import 'pages/landing_page.dart';
+import 'pages/main_navigation_scaffold.dart';
 import 'services/flood_station_provider.dart';
 import 'package:timezone/data/latest.dart' as tz;
 
@@ -27,9 +28,9 @@ class MyApp extends StatelessWidget {
         colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
         useMaterial3: true,
       ),
-      initialRoute: LandingPage.routeName,
+      initialRoute: MainNavigationScaffold.routeName,
       routes: {
-        LandingPage.routeName: (context) => LandingPage(),
+        MainNavigationScaffold.routeName: (context) => MainNavigationScaffold(),
         FloodStationPage.routeName: (context) => FloodStationPage(),
       },
     );