yt(1) is a helper script providing functions for use with mpv and yt-dlp for
viewing and interacting with YouTube videos.

Dependencies:
- curl(1)
- fzf(1)
- jq(1)
- mpv(1)
- yt-dlp(1)

Usage:
yt add | clone | music | pick | play | verify

add uri file
- Adds a video by URI to a playlist

cache uri...
- Caches a video title

clone uri file
- Clones a YouTube playlist to a file

music uri...
- Downloads a video as audio, splitting it by chapter

pick file...
- Opens fzf(1) to a list of videos in a file

play uri...
- Plays a video, caching its title first

verify file...
- Verifies that all the videos in a playlist are existent on YouTube, and if
they aren’t, attempts to replace the URI with one from the Wayback Machine. If
the video isn’t available on the Wayback Machine, it comments the video link. It
then caches the title of the video.