add listView year dropdown

lib/controller/home_controller.dart

@@ -9,6 +9,7 @@ class HomeController extends GetxController {
   final isLoading = false.obs;
   final listTankModel = <TankModel>[].obs;
   final appwriteService = AppwriteService();
+  final currentYear = DateTime.now().year.obs;
 
   @override
   void onInit() {
@@ -22,12 +23,17 @@ class HomeController extends GetxController {
   @override
   void onClose() {}
 
+  void changeYear(int year) {
+    currentYear.value = year;
+    _loadListDocument();
+    update();
+  }
+
   Future<void> _loadListDocument() async {
     isLoading.value = true;
     if (listTankModel.isNotEmpty) {
       listTankModel.clear();
     }
-    var dateYear = DateTime.now().year;
     var userId = await appwriteService.getCurrentUserId();
     if (userId == null) {
       //User nicht eingeloggt, evtl. zur Login-Seite navigieren
@@ -46,7 +52,7 @@ class HomeController extends GetxController {
       if (listTankModel.isNotEmpty) {
         var sortList = listTankModel.where((tank) {
           var year = (DateTime.tryParse(tank.szDate)!).year;
-          return year == dateYear;
+          return year == currentYear.value;
         }).toList();
         listTankModel.clear();
         listTankModel.addAll(sortList);