Add Fast Image Processor for vilt

[devxaitist]

What does this PR do?

Add ViltImageProcessorFast implementation for faster image processing using PyTorch. (#36978)

This PR adds a fast image processor for the Vilt model that leverages PyTorch and torchvision functions instead of PIL/numpy. The implementation improves performance by using tensor operations and enabling GPU processing.

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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• Did you write any new necessary tests?

Who can review?

@yonigozlan

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