add import export and items

lib/helper/sample_routes.dart

@@ -2,6 +2,8 @@ import 'package:get/get.dart';
 
 import '../controller/anwendung_controller.dart';
 import '../controller/bauteil_controller.dart';
+import '../controller/export_controller.dart';
+import '../pages/export_view.dart';
 import '../pages/anwendung_view.dart';
 import '../pages/bauteil_view.dart';
 import '../pages/home_view.dart';
@@ -10,6 +12,13 @@ import 'sample_bindings.dart';
 class SampleRouts {
   static final sampleBindings = SampleBindings();
   static List<GetPage<dynamic>> samplePages = [
+    GetPage(
+      name: ExportView.routeName,
+      page: () => const ExportView(),
+      binding: BindingsBuilder(
+        () => Get.lazyPut<ExportController>(() => ExportController()),
+      ),
+    ),
     GetPage(
       name: '${AnwendungView.routeName}/:filamentId',
       page: () => const AnwendungView(),

lib/helper/storage_keys.dart

@@ -1,5 +1,6 @@
 class StorageKeys {
   static const filamente = 'kauf_filamente';
+  static const materialien = 'filament_materialien';
   static const anwendungen = 'filament_anwendungen';
   static const bauteile = 'gedruckte_bauteile';
 }