xuning / livekitAndroidXuningTest

* 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

* implement RegionUrlProvider and Room.prepareConnection

* spotless

* fix test

* ensure signal client uses proper scheme when connecting

* more scheme enforcement

This indicates to linters that this will never return and can mark any code after it as unreachable.

* Signal local audio track feature updates

* Fix npe

* Fix custom audio processing factory

* Add TranscriptionReceived event to track publication

* spotless