add option to add more than one service

lib/models/appointments_models/selected_appointment_service_model.dart

@@ -0,0 +1,28 @@
+
+
+
+import 'package:mc_common_app/models/services_models/item_model.dart';
+import 'package:mc_common_app/widgets/dropdown/dropdow_field.dart';
+
+class SelectedAppointmentServiceModel {
+  final DropValue category;
+  final DropValue service;
+  final List<ItemData> items;
+
+  SelectedAppointmentServiceModel({
+    required this.category,
+    required this.service,
+    required this.items,
+  });
+
+  double get totalPrice => items.fold<double>(
+    0,
+        (sum, item) => sum + (double.tryParse(item.price ?? '0') ?? 0),
+  );
+
+  List<int> get itemIds => items
+      .map((item) => item.id)
+      .whereType<int>()
+      .where((id) => id > 0)
+      .toList();
+}

lib/widgets/dropdown/dropdow_field.dart

@@ -355,12 +355,18 @@ class _SearchableDropdownSheetState extends State<_SearchableDropdownSheet> {
                                 fontWeight: isSelected ? MyFonts.Bold : MyFonts.Medium,
                               ),
                               trailing: isSelected ? const Icon(Icons.check, color: MyColors.darkPrimaryColor) : null,
+                              // onTap: !isEnabled
+                              //     ? null
+                              //     : () {
+                              //         widget.onSelected(value);
+                              //         Navigator.pop(context);
+                              //       },
                               onTap: !isEnabled
                                   ? null
                                   : () {
-                                      widget.onSelected(value);
-                                      Navigator.pop(context);
-                                    },
+                                Navigator.pop(context);
+                                widget.onSelected(value);
+                              },
                             );
                           },
                         ),