Add to Playlist enhancement

[Steven]

The "Add to Playlist" command (right click on a file) has been enhanced to show a tick when the selected file(s) are in a playlist.
When used with multiple files selected, if only some of the files are in a playlist, and indeterminate tick displays. If all the files are in a playlist, a normal tick displays

https://getmusicbee.com/patches/MusicBee34_Patched.zip
unzip and replace the existing musicbee application files

[alec.tron]

Neato (even though I have not wishlisted this, it sure will come in handy), thanks Steven!
c.