Lolcatt

- Enable marking youtube videos as watched if a cookie file is provided
- Show `catt` device aliases in the output of `catt --scan`

Fix crashes when there's no chromecast devices available.

- Attaching to, detaching from, and controlling chromecast devices via `catt`
- Cast local audio, video and image files
- Cast from websites supported by `yt-dlp`, thereby removing ads
- Device and playback info display
- Interactive progressbar for seeking
- Support for Youtube playlists incl. moving forward and back through played videos
- Support for restricted and private playlist/videos on youtube via a `cookies.txt` file