[fix] Added basic locatlization

lib/main.dart

@@ -1,5 +1,7 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:provider/provider.dart';
+import 'l10n/app_localizations.dart';
 import 'pages/collection_page.dart';
 import 'pages/collections_list_page.dart';
 import 'pages/search_page.dart';
@@ -66,6 +68,13 @@ class _MapsBookmarksState extends State<MapsBookmarks>
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
+      localizationsDelegates: [
+        AppLocalizations.delegate,
+        GlobalMaterialLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+      ],
+      supportedLocales: [Locale('en'), Locale('de')],
       navigatorKey: _navigatorKey,
       theme: lightTheme,
       darkTheme: darkTheme,