update carton filter and merge api for shipment

lib/pages/carton/model/carton_model.dart

@@ -17,6 +17,8 @@ import 'package:path/path.dart' as Path;
 class CartonModel extends BaseModel {
   final log = Logger('CartonModel');
 
+  var defaultShipment =FcsShipment(shipmentNumber: "All shipments", id: all);
+
   PaginatorListener<Carton>? cartonsByFilter;
   PaginatorListener<Carton>? getBoxes;
 
@@ -56,7 +58,8 @@ class CartonModel extends BaseModel {
     _loadPaginationCartons();
   }
 
-  filterCarton(User? consignee, User? sender, String? status) async {
+  filterCarton(FcsShipment? fcsShipment, User? consignee, User? sender,
+      String? status) async {
     filterByStatus = status;
 
     if (status == all_status) {
@@ -77,6 +80,12 @@ class CartonModel extends BaseModel {
       filterBySender = sender;
     }
 
+    if (fcsShipment?.id == all) {
+      shipment = null;
+    } else {
+      shipment = fcsShipment;
+    }
+
     loadPaginationCartons();
     notifyListeners();
   }