App to route audio streams from Spotify / LastFM to channel

[Sing-Li]

App idea (not BOT) transferred from RocketChat/Rocket.Chat#10174

From @bott0r

It would be really fantastic to be able to create a bot that could first connected to spotify, lastfm, or something, and would reroute the audio signal from these services into a given channel, via webrtc, all other clients would not have the permission to speak(voice) in this channel, so connected people could listen to the generated audio signal, i.e. music

After that, the possibilities are endless, e.g. playlists and queues where people can add to the queue with a simple chat command such as @radiobot: add Michael Jackson Smooth Criminal or similar features.