set song as playlist art

Feature description:

Add an option to search for a song and use that album art as playlist art.

Problem solved:

It is only possible to do this by searching online and downloading the art, or not embedding your art and finding the cover art in your files manually (if your a local library person)

Brought benefits:

It’s a step up from the random playlist art button.

Some playlists are best suited with that one perfect album art.

Other application solutions:

 
Spotify allows you to create a custom art in app as well as pick a file, blackplayer only has the file picking option. Symphonium is kind of already ahead in this feature with what it currently offers.
 

Additional description and context:

 

 

Screenshots / Mockup: