Subsonic servers participation

Just need to be sure everyone is on the same page since the idea of a new API resurface.

Time is limited for everyone, so doing both in parallel won’t brings good.

Anyway if all is good, we can move on the extension part then.

Just need the github organisation created see Documentation Site and Organization

For neutrality and more participation from other client side, I think it would be best if the owner of the org was one of the open source server. Let’s continue on the other thread and define a name to move on.