Implement monitoring /live endpoint as alternative to parsing rss feed

[Carravan]

There are three scenarios to account for

• Request is forwarded to live stream -> start yta
• Request is forwarded to channel page -> do nothing
• Request is forwarded to waiting room -> do nothing
  Waiting rooms can sometimes be scheduled frames for free chat or weekly schedules, which will likely never go live and could spawn long-waiting yta processes which also add to rate limit margin, especially when starting up

[DaniruKun]

By the way, why not just use the Holodex API to get index of scheduled streams, and then set ytarchive in -w wait mode, so that it only starts trying to download when the stream goes live?

[Carravan]

Wouldn't that limit the channels I can archive to those supported by the API? I have obscure taste.