New component for receiver (Onkyo, Denon, e.t.c)

Currently all the receivers go under the media player which limits the usage to only play/pause, volume and input select as i understand other settings are not supported under such entity type.

This limits the usage. Would be great to have a separate receiver component so geting stuff like late night, listen mode, speaker configuration or other settings wouldn’t force people to create template switches (which are hard to code).