added settings page

lib/main.dart

@@ -5,6 +5,7 @@ import 'l10n/app_localizations.dart';
 import 'pages/collection_page.dart';
 import 'pages/collections_list_page.dart';
 import 'pages/search_page.dart';
+import 'pages/settings_page.dart';
 import 'service/search_provider.dart';
 import 'service/shared_link_provider.dart';
 import 'service/storage.dart';
@@ -83,6 +84,7 @@ class _MapsBookmarksState extends State<MapsBookmarks>
         CollectionsListPage.routeName: (context) => const CollectionsListPage(),
         CollectionPage.routeName: (context) => const CollectionPage(),
         SearchPage.routeName: (context) => const SearchPage(),
+        SettingsPage.routeName: (context) => const SettingsPage(),
       },
     );
   }

lib/pages/settings_page.dart

@@ -0,0 +1,11 @@
+import 'package:flutter/material.dart';
+
+class SettingsPage extends StatelessWidget {
+  static const routeName = '/settings';
+  const SettingsPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Placeholder();
+  }
+}