* Bump androidtv to 0.0.19; add 'state_detection_rules' config parameter
* Bump androidtv to 0.0.20
* Add detailed config check for 'state_detection_rules'
* Linting
* Remove unused variable
* Bump androidtv to 0.0.21, move config validation into backend package
* dict() -> {}
Co-Authored-By: Martin Hjelmare <marhje52@kth.se>