added android client

android/LICENSE.md

@@ -0,0 +1,20 @@
+# proton-stream for Android license
+
+SPDX-License-Identifier: GPL-3.0-or-later
+
+Copyright (c) proton-stream contributors.
+
+The Android application under this directory is free software: you may
+redistribute it and/or modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the [GNU GPL version 3](https://www.gnu.org/licenses/gpl-3.0.html)
+for the complete license text.
+
+This licensing choice applies to the Android application and its distribution,
+including the combined native player. Rust crates outside `android/` retain the
+licenses declared in their manifests; the repository root `LICENSE` remains the
+MIT license for those components.