add package return

lib/data/provider/package_data_provider.dart

@@ -48,6 +48,14 @@ class PackageDataProvider {
         token: await getToken());
   }
 
+  Future<void> packageReturn(String packageID) async {
+    return await requestAPI("/packages/return", "PUT",
+        payload: {
+          "id": packageID,
+        },
+        token: await getToken());
+  }
+
   Future<List<Package>> searchPackage(String term) async {
     if (term == null || term == '') return List();
 

lib/data/services/package_imp.dart

@@ -53,4 +53,9 @@ class PackageServiceImp implements PackageService {
   Future<void> changeDeliveryAddress(String packageID, String deliveryID) {
     return packageDataProvider.changeDeliveryAddress(packageID, deliveryID);
   }
+
+  @override
+  Future<void> packageReturn(String packageID) {
+    return packageDataProvider.packageReturn(packageID);
+  }
 }

lib/data/services/package_service.dart

@@ -9,4 +9,5 @@ abstract class PackageService {
   Future<void> deleteProcessing(Package package);
   Future<List<Package>> searchPackage(String term);
   Future<void> changeDeliveryAddress(String packageID, String deliveryID);
+  Future<void> packageReturn(String packageID);
 }