Universal build of liblsl-android-builder (x86, x86_64, armeabi-v7a, arm64-v8a)
Improvements:
- Updated liblsl version (1.16.0-> 1.16.2)
- Update SDK, NDK, buildtools, gradle and dependencies to last version
- Update grade building instructions
- Fix gradle jniLibs copy tasks
- Rename App (APK) to disambiguate with project name