use fastlane to deploy android app

frontend/android/fastlane/README.md

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+fastlane documentation
+----
+
+# Installation
+
+Make sure you have the latest version of the Xcode command line tools installed:
+
+```sh
+xcode-select --install
+```
+
+For _fastlane_ installation instructions, see [Installing _fastlane_](https://docs.fastlane.tools/#installing-fastlane)
+
+# Available Actions
+
+## Android
+
+### android test
+
+```sh
+[bundle exec] fastlane android test
+```
+
+Runs all the tests
+
+### android closed_testing
+
+```sh
+[bundle exec] fastlane android closed_testing
+```
+
+Submit a new build to the closed testing lane
+
+### android deploy
+
+```sh
+[bundle exec] fastlane android deploy
+```
+
+Deploy a new version to the Google Play
+
+----
+
+This README.md is auto-generated and will be re-generated every time [_fastlane_](https://fastlane.tools) is run.
+
+More information about _fastlane_ can be found on [fastlane.tools](https://fastlane.tools).
+
+The documentation of _fastlane_ can be found on [docs.fastlane.tools](https://docs.fastlane.tools).