Support for SD3

[ftenrique]

The new Stable Diffusion weights that have been made available, at least the 2b model.

[leejet]

WIP!

[Green-Sky]

https://huggingface.co/madebyollin/taesd3

Looks like taesd is ready there too :)

[Green-Sky]

I wonder how much ggml-org/llama.cpp#8055 and ggml-org/llama.cpp#8006 and related will help.

[leejet]

Try #298.

[github-actions]

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