A nixos module for configuring the server side of pkgs.snapcast.
The module is named "snapserver" following upstream convention.
This commit does not provide module for the corresponding client.
Fix handling of port and controlPort
Fix stream uri generation & address review
Remove unused streams options & add description
Add missing description & Remove default fs path
Use types.port for ports & formatting improvements
Force mpd and mopidy to wait for snapserver
