add HD-Painter pipeline

[haikmanukyan]

What does this PR do?

This PR adds HD-Painter.
HD-Painter is a training-free approach for improving text-alignment of Stable Diffusion based text-guided inpainting models.
It adds the StableDiffusionHDPainterPipeline which is an inpainting pipeline inheriting from StableDiffusionInpaintPipeline,
as well as the PAIntAAttnProcessor, an attention processor implementing the PAIntA layer from the paper.

Usage example

import torch
from diffusers import DiffusionPipeline, DDIMScheduler
from diffusers.utils import load_image, make_image_grid

pipe = DiffusionPipeline.from_pretrained(
    "stabilityai/stable-diffusion-2-inpainting",
    custom_pipeline="hd_painter"
)
pipe.scheduler = DDIMScheduler.from_config(pipe.scheduler.config)

prompt = "wooden boat"
init_image = load_image("https://raw.githubusercontent.com/Picsart-AI-Research/HD-Painter/main/__assets__/samples/images/2.jpg")
mask_image = load_image("https://raw.githubusercontent.com/Picsart-AI-Research/HD-Painter/main/__assets__/samples/masks/2.png")

image = pipe (prompt, init_image, mask_image, use_rasg = True, use_painta = True, generator=torch.manual_seed(12345)).images[0]

make_image_grid([init_image, mask_image, image], rows=1, cols=3)

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@sayakpaul

[sayakpaul]

Thanks for contributing!

We should be able to pass custom_pipeline="..." and not the way you're showing in the OP. You can refer to the community examples REAMDE to know more about it.

[HuggingFaceDocBuilderDev]

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[haikmanukyan]

@sayakpaul

[haikmanukyan]

@sayakpaul done

[sayakpaul]

Will merge once the CI is green.

[haikmanukyan]

@sayakpaul I was using wrong ruff version, it should pass the check now

[sayakpaul]

Thanks for your contributions.