Use NUL character to extract meta and path from git diff

[NHanser]

Use NUL character instead of semicolon to extract meta and path. Avoid errors in during git diff when dealing with filenames containing semicolons
Re-submit (#1387 (comment))

[NHanser]

Test not passed. Need to review why (only valid with raw? I'm using diff with this option if I remember (don't have code with me))

[Byron]

Thanks for giving it another look. By the way, it's possible to turn on actions in your own fork which then should run them each time you push into a branch even, no PR to check CI is needed then.

I also don't mind to keep this PR open and let it re-run each time there is a change to see if that worked and in case it's not reproducible locally - I'd think it should be.