[enhancement]: Implement Ultraflux model native 4k

[m4iccc]

Is there an existing issue for this?

• I have searched the existing issues

Contact Details

No response

What should this feature add?

This is a model that's optimized in ComfyUi to generate 4k images in many aspect ratios, another alternative for Dype without the weird artifacting it has sometimes.

https://github.com/W2GenAI-Lab/UltraFlux

Alternatives

No response

Additional Content

No response

[lstein]

@Pfannkuchensack For your consideration. (I don't have enough memory to generate 4K images and can't comment on DPYE vs Ultraflux!)