* Move Plex->Sonos playback service from integration to platform
* Test against 'native' Plex media_players
* Add Plex to Sonos after_dependencies
* Remove circular dependency
* Raise exceptions in failed service calls
* Add test to forward service call from Sonos
* Additional Sonos->Plex tests
* Fix docstring
* Add Plex service to refresh a library
* Clean up rebase leftovers
* Re-run black
* Fix docstring
Co-authored-by: Charles Garwood <cgarwood@newdealmultimedia.com>
Co-authored-by: Charles Garwood <cgarwood@newdealmultimedia.com>