The very basic necessity of showing your "Playlists" feature are missing?!

[TheSeriousYoungBoy]

Is your feature request related to a problem? Please describe.
Showing the playlist is one of the most basic necessities of a media player, I can't believe one would remove such a very useful tool to watch your own media files. Even VLC has it as a free-open-source project.

Describe the solution you'd like
Please bring back or create a simple "Show Playlist/F8" specifically for MPV.NET, it just doesn't sit right with me that there's no such basic functionality in the media player.

Describe alternatives you've considered
Even a simple playlist window is good enough like VLC's or if that's not simplier enough, adding a functionality where your playlists could pop-out as texts on the current video playing, and there, you can actually use your arrow keys to toggle which video you would like to play/modify/delete is simply enough...

Additional context
You already gave it as one of the four available options to choose from, it's better if we can simply manually enable it in the app.
(https://github.com/jonniek/mpv-playlistmanager) for a much more vibrant experience. Thanks.