xuning / livekitAndroidXuningTest

* Implement LocalAudioTrack.addSink

* test fix

* fix tests

* fix tests

* Update protocol submodule

* Initial Metrics implementation

* Protocol/metrics updates

* adjust log level of metrics exception

* spotless/changeset

* update protocol submodule

* spotless

* disable metrics for mocke2e unit tests since it causes tests to never complete

* spotless

* visibility

* make changeset patch and some more docs

* Add connect error handling to basic sample app

* fix

* Initialize RTC library only once

* spotless and changeset

* Properly dispose peer connection on RTC thread

* changeset

Co-authored-by: davidliu <242400+davidliu@users.noreply.github.com>

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

* More fixes for crashes caused by using disposed track

* Add withRTCTrack method to refactor the isDisposed usage

* spotless

* Add utility class NoDropVideoProcessor to force video processing while not connected

* Fix local video tracks not rendering processed frames

Co-authored-by: davidliu <242400+davidliu@users.noreply.github.com>

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

* Update protocol to 1.20.0

* Implement LocalTrackSubscribed event

* More guarding of rtc api usages

* spotless

* changeset

Co-authored-by: davidliu <242400+davidliu@users.noreply.github.com>

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

* Changeset setup

* fix scripts and have changesets update snapshot version in readme

* create snapshot pr

* Self camera

* spotless

* Add test for TrackSubscribed

* spotless

* Add RoomEvent.ParticipantAttributesChanged

* fix test

* Fix deadlock caused by multiple concurrent setCameraEnabled calls

* tests

* spotless

* Update protocol submodule

* Add support for participant attributes

* spotless