xuning / livekitAndroidXuningTest

* Update protocol submodule

* fix compile

* Remove obsolete when safe operator

* ping pong implementation

* Add in backup websocket ping/pong

* pingpong test

* lower okhttp ping interval to 20 seconds for now

* clear response/request flow in case anything previously unhandled remains

* Add in some verbose logging whenever SignalClient closes

* more comments and disable request buffer clearing

* fix reconnect not republishing tracks

* apply delay fix to other reconnect tests

* fix tests

* Update compile and target sdk to Android API level 33

* Update documentation on screen sharing notification for Android API level 33

subscriber may not have disconnected and won't fire a connection state update

* speaker highlighting added on sample-app (#125)

* Update ParticipantItem.kt

* update readme and docs

* clean up interface methods leaking into docs

* AudioSwitchHandler documentation

* Update package descriptions

* Include link to API reference in README

* update dependencies

* Add in basic one participant sample app

* clean up debug keys

* update readme sample

* Update README and add readmes for each project folder

* Assemble all modules for compile test safety

* Disconnect on destroy

* update compile/target version

* fix build errors

* fix tests