update cargo type input, add package count and carton count for shipment info

lib/pages/fcs_shipment/model/fcs_shipment_model.dart

@@ -314,4 +314,30 @@ class FcsShipmentModel extends BaseModel {
     }
     return fcsShipments;
   }
+
+  Future<int?> getPackageCount({required String fcsShipmentId}) async {
+    String path = "/$packages_collection";
+
+    AggregateQuerySnapshot query = await FirebaseFirestore.instance
+        .collection(path)
+        .where("fcs_shipment_id", isEqualTo: fcsShipmentId)
+        .where("delete_time", isEqualTo: 0)
+        .count()
+        .get();
+
+    return query.count;
+  }
+
+  Future<int?> getCartonCount({required String fcsShipmentId}) async {
+    String path = "/$cartons_collection";
+
+    AggregateQuerySnapshot query = await FirebaseFirestore.instance
+        .collection(path)
+        .where("fcs_shipment_id", isEqualTo: fcsShipmentId)
+        .where("delete_time", isEqualTo: 0)
+        .count()
+        .get();
+
+    return query.count;
+  }
 }