basicsr gfpgan gradio numpy Pillow realesrgan torch transformers omegaconf pytorch_lightning diffusers invisible-watermark scikit-image fonts font-roboto git+https://github.com/crowsonkb/k-diffusion.git git+https://github.com/TencentARC/GFPGAN.git timm==0.4.12 fairscale==0.4.4