Feature Request: Add ComfyUI as a backend

[afecelis]

Describe the feature you'd like to see:

Hi Ben,
It would be great if besides connecting to A1111 locally, blender could also connect to a running instance of ComfyUI. I've tried using its localhost address, but it cant connect tioit via API. Also, I don't know how much Comfy's node structure would impact what you have already developed around A1111.

Additional information

No response

[benrugg]

This would be a nice addition! I haven't personally used ComfyUI, but it looks great. I don't have the bandwidth to do this right now, but I'd love any collaboration!

(Each backend has its own API file and it should be pretty straightforward for a developer to add a new one for Comfy).