(feature) metadata properties extra functions

[ghost]

it would be nice to have the possibility to select specific/all metadata fields in the title-properties section at the same time for cut/copy/paste actions.

also new buttons "delete all metadata" and "auto track number" would be very helpful.

for a complete rewrite of your tags defined, you could for instance copy the artist, album and title, delete all metadata and then insert these three fields again - or even faster, remove all fields except these three.

i hope i didn't make it more complicated than i thought.

[mallniya]

This supersedes https://github.com/DeaDBeeF-Player/deadbeef/issues/2344, since it was only about selection (not editing) of properties. "auto track number" could be guessed from filename (for which I created separate feature request https://github.com/DeaDBeeF-Player/deadbeef/issues/2756).

[Oleksiy-Yakovenko]

To me, this issue seems to be completely unrelated from 2344