[Feature Request] Please add Composer and Performer as tags to search on

[wom-bat]

Describe the solution you'd like
I have around 10000 tracks of early and classical music, by many performers. Key tags for sorting are composer, conductor and performer. There can be more than one performer tag per track.

It'd be really nice to be able to pick out all pieces by J.S. Bach with Neville Mariner as conductor, for instance; or to find all the tracks with Emma Kirkby singing, regardless of who the 'artist'

Describe alternatives you've considered
The main alternative is to retag everything so that the 'artist' field somehow encodes all of the possibilities (and even then, it's not clear how to do that)

Additional context
Add any other context or screenshots about the feature request here.

[Rello]

Hello,
the composer is already added to the scanner
https://github.com/Rello/audioplayer/blob/master/lib/Controller/ScannerController.php#L291C34-L291C34

Do you know the ID3 tag for the performer?