Feature Request: Automatically Copy Song Metadata + Filename

[luciano-work]

Hello!

First of all, congratulations on the application and all the documentation, it is perfectly excellent.

I think it would be awesome if KaraFan automatically copied song metadata like artist, album, title, synced lyrics to the generated outputs. What would also be cool is if the naming scheme of the output files could be changed to FILENAME_(vocals)

Why is this you may ask?

I'm using karaoke software that automatically downloads .lrc from a music file or from the Internet.
in the current state of the naming scheme the metadata is not being copied, this often fails and does not find the letter until the file is renamed accordingly.

I don't know how to program in Python to send a PR and to solve my problem I'm using the package node-id3 in my custom script to copy all the tags, This takes a little work as there are 3 steps (split, rename and copy).

All the best