"Podcastify" YT videos

[TheWebMachine]

Based on my understanding of how MA is utilizing the yt-dlp API, it should be relatively easy to access YT videos the same way to send the audio to our speakers podcast-style.

Sure, I can add podcasts to YTM and listen through MA (this does need some improvement, but I digress), but I would love to be able to access a YT playlist and listen to the videos on my speakers (no video). This would enable turning any YT video into a podcast for casting.

The only immediate technical issue I see cropping up is the use of a YTM-specific cookie, which may prevent accessing YT playlists. Perhaps split the YT Podcastification into its own provider using a separate cookie to get around this, but the inner workings for playlists and such should be fairly similar to YTM and all accessible via the same yt-dlp API.