Added TableTrasnformerImageProcessor

[nileshkokane01]

What does this PR do?

Fixes #30718

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@NielsRogge

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[NielsRogge]

Hi @nileshkokane01, thanks for your PR. Could you add a check to verify pixel values are created it in the exact same way as the original one by adding TableTransformerImageProcessor to the conversion script?

Ideally it could look like this

transformers/src/transformers/models/dinov2/convert_dinov2_to_hf.py

Line 220 in 539ed75

assert torch.allclose(original_pixel_values, pixel_values)