Player grouping support

[johnuopini]

First of all let me tell you, this works and works great. The only missing thing i see is grouping support.
For example i have a Sonos group called "living area", it works just fine in Music assistant but it doesn't via LLM.
In particular:

• If i have players grouped in Music Assistant and try to play via LLM on a single player group will not be "broken", instead music will stay in the group
• If group is not "grouped" and i try to play on the "group" the group is not created (MA will just play on a speaker)
• There is no way to manage groups

Maybe this could be a different script?

[nikito]

Yeah I think we'd need to look into making a different set of blueprints centered around grouping controls and maybe even queue control (transfer queue to different players or groups for example).