add fcs shipment service

lib/data/provider/fcs_shipment_data_provider.dart

@@ -0,0 +1,23 @@
+import 'package:fcs/domain/entities/fcs_shipment.dart';
+import 'package:fcs/helpers/api_helper.dart';
+import 'package:fcs/helpers/firebase_helper.dart';
+import 'package:logging/logging.dart';
+
+class FcsShipmentDataProvider {
+  final log = Logger('FcsShipmentDataProvider');
+
+  Future<void> createFcsShipment(FcsShipment fcsShipment) async {
+    return await requestAPI("/fcs_shipments", "POST",
+        payload: fcsShipment.toMap(), token: await getToken());
+  }
+
+  Future<void> updateFcsShipment(FcsShipment fcsShipment) async {
+    return await requestAPI("/fcs_shipments", "PUT",
+        payload: fcsShipment.toMap(), token: await getToken());
+  }
+
+  Future<void> deleteFcsShipment(FcsShipment fcsShipment) async {
+    return await requestAPI("/fcs_shipments", "DELETE",
+        payload: fcsShipment.toMap(), token: await getToken());
+  }
+}