Add support for Ovis-Image

[DoctorKey]

What does this PR do?

This PR introduces Ovis-Image into the diffusers library. Ovis-Image integrates a diffusion-based visual decoder with the Ovis 2.5 multimodal backbone, leveraging a text-centric training pipeline that combines large-scale pre-training with carefully tailored post-training refinements. Despite its compact architecture, Ovis-Image achieves text rendering performance on par with significantly larger open models such as Qwen-Image and approaches closed-source systems like Seedream and GPT4o.

[DoctorKey]

Ovis-Image has been released:

• GitHub: https://github.com/AIDC-AI/Ovis-Image
• Hugging Face: https://huggingface.co/AIDC-AI/Ovis-Image-7B

[yiyixuxu]

@bot /style

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[yiyixuxu]

Thanks so much for the PR! I left a few feedbacks, and I think we can merge this very soon

Congrats on the release!! Sorry, we overlooked the PR (it was the thanksgiving holiday in US)
We will reach out to set up a collaboration channel for your future release.

[DoctorKey]

Thank you for the detailed feedback. I have addressed all comments in this commit. Please let me know if further adjustments are needed!
@yiyixuxu

[yiyixuxu]

thanks!

[yiyixuxu]

can you run make style and make fix-copies

and do you want to add docs and test in a follow up PR?

we need to add these docs:

• for transformer here https://github.com/huggingface/diffusers/tree/main/docs/source/en/api/models and *
• for pipeline here: https://github.com/huggingface/diffusers/tree/main/docs/source/en/api/pipelines

test I saw you already created a folder:)

[DoctorKey]

I have run make style and make fix-copies in this commit.

The docs have been added in this commit.

We want to add test in a follow up PR.