add loading image processor

[eaidova]

What does this PR do?

Fixes # (issue)

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

Who can review?

[eaidova]

@echarlaix

[echarlaix]

LGTM, thanks @eaidova !

[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.

[IlyasMoutawwakil]

@eaidova can you please fix the case of pix2struct, it expects exactly 2 processors in:

• optimum/optimum/exporters/onnx/model_configs.py

  Line 2582 in fa87c66

  if self._preprocessors is None or len(self._preprocessors) != 2:

• optimum/optimum/exporters/onnx/model_configs.py

  Line 2601 in fa87c66

  if self._preprocessors is None or len(self._preprocessors) != 2:

simply making it "<2" should fix it.