[Feature]: Add support for PMRF face restoration

[not-ski]

Feature description

https://github.com/ohayonguy/PMRF

PMRF is a very promising new face restoration model/method; quick testing shows it to be quite competitive with GPEN (which is my current preferred restoration model).

This would work very well in conjunction with Reactor's Face Booster node, as PMRF is optimized to restore square, cropped, and center-aligned face images.

[Gourieff]

Thanks, I'll take a look this week
PR is welcome as well :)