FluxUnchained NF4

All credit goes to SocialGuitarist for tuning this model,
and lllyasvielfor for providing the conversion script.

I converted this model since my 3080 10g has trouble running FP8 or FP16, and Q4 and Q5 are considerably slower than NF4 while giving similar result.

Not sure how NF4 can be used in ComfyUI, but I have been getting good results using it in Forge with good inference speed.

There are 2 versions, one with text encoder baked in and one with only the unet (to save disk space).

To use the unet, select/add the following encoders in the Text Encoder Setting of Forge.

All the license terms associated with Flux.1 Dev apply.