added simple search feature

lib/pages/collections_list_page.dart

@@ -7,6 +7,7 @@ import '../service/shared_link_provider.dart';
 import '../service/storage.dart';
 import '../widgets/create_bookmark_collection_dialog.dart';
 import 'collection_page.dart';
+import 'search_page.dart' show SearchPage;
 
 class CollectionsListPage extends StatefulWidget {
   const CollectionsListPage({super.key});
@@ -88,6 +89,12 @@ class _CollectionsListPageState extends State<CollectionsListPage> {
             TextButton(
               onPressed: () => provider.removeCurrentMapsLink(),
               child: Text('Cancel'),
+            )
+          else
+            IconButton(
+              onPressed: () =>
+                  Navigator.of(context).pushNamed(SearchPage.routeName),
+              icon: Icon(Icons.search),
             ),
         ],
       ),