✨ [REQUEST] Snapcast (multiroom client-server audio player)

[ChristophHoltmann]

Checked

• If a new addon, I have checked on Google that such as addon doesn't already exists
• If a new feature, I have searched in the discussions & issues that it was not already covered

Which addon?

Snapcast (https://github.com/badaix/snapcast) is a multiroom client-server audio player, where all clients are time synchronized with the server to play perfectly synced audio. It's not a standalone player, but an extension that turns your existing audio player into a Sonos-like multiroom solution.

Is your feature request related to a problem? Please describe

It would be great to have an easy way to setup a Snapcast server using hassio-addons.

Describe the solution you'd like

https://github.com/rwjack/addon-snapserver-spotify/
https://github.com/EvTheFuture/hassio-addon-snapcast
(both didn't work for me, are outdated or throw errors)