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();