[bug] notify if errors with yt-dlp or mpv

[sqvist]

My yt-dlp was outdated, but ytui didnt tell me that. What happened was that ran 'ytui query subscribed' and selected a video, and it just "added to mpv" and closed. And left me hanging there.

Later when i tried to run the commands manually, i was brought to some yt-dlp errors, and that was resolved by updating my binary. After that, it worked without problem.

A message telling me to "check my yt-dlp" would be great! :) Because when i ran the command manually;
mpv --ytdl-format=bestvideo[ext=mp4][height<=?2160]+bestaudio[ext=m4a] --ytdl-raw-options=mark-watched=,cookies-from-browser=firefox ....

yt-dlp gave me an error. That error couldve been logged in ytui. :)