[Feature request] Add a PipeWire client so system audio can be casted to a receiver

[PureTryOut]

Rather than now putting in work to add Nymphcast support in a lot of applications it might be useful to add a PipeWire-based client so system audio (and thus any application running on it) could be cast to a Nymphcast receiver. Ideally any Nymphcast receiver or group would appear as an audio device so people could use their existing sound settings to change audio output to a receiver. It would also be a great alternative to both Bluetooth and PipeWire-zeroconf based speakers.

[MayaPosch]

That's indeed similar to an idea which I had before, though I was looking mostly at cross-platform solutions for a 'virtual audio device'. I think that now that PipeWire is becoming pretty much the standard for Linux, it would be a very useful feature to have.

I have looked at the PipeWire documentation some for how to use the API, but any specific resources you may have found are always welcome before I dive into this :)