feat: add `is_fast` to ImageProcessor (#39603)
* feat: add `is_fast` to ImageProcessor
* test_image_processing_common.py 업데이트
Co-authored-by: Yoni Gozlan <74535834+yonigozlan@users.noreply.github.com>
* feat: add missing BaseImageProcessorFast import
* fix: `issubclass` for discriminating subclass of BaseImageProcessorFast
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Co-authored-by: Yoni Gozlan <74535834+yonigozlan@users.noreply.github.com>
Co-authored-by: Cyril Vallez <cyril.vallez@huggingface.co>
