added cargo files

PinePods-0.8.2/mobile/lib/core/annotations.dart

@@ -0,0 +1,8 @@
+// Copyright 2020 Ben Hills and the project contributors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/// Simple marker to indicate a field is transient and is not intended to be persisted
+class Transient {
+  const Transient();
+}