fix(media_player): centralise power-state decision engine, document sound system state machine, and add intercom ducking trace replay (#682) - #683

fix(media_player): centralise power-state decision engine, document sound system state machine, and add intercom ducking trace replay (#682)#683

GreenGrassBlueOcean merged 3 commits into

OpenWebNet-HA:v2-phase1-architectureOpenWebNet-HA/MyHOME:v2-phase1-architecturefrom

GreenGrassBlueOcean:fix/issue-682-media-player-state-complexityGreenGrassBlueOcean/MyHOME:fix/issue-682-media-player-state-complexityCopy head branch name to clipboard