Add Fast Conditional-DETR Processor (#37071)

* Add Fast Conditional-DETR Processor

* Update image_processing_conditional_detr_fast.py

* Add modular_conditional_detr.py

* Update image_processing_conditional_detr_fast.py

* Update tests

* make fix

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Co-authored-by: Yoni Gozlan <74535834+yonigozlan@users.noreply.github.com>

docs/source/en/model_doc/conditional_detr.md

@@ -48,6 +48,11 @@ This model was contributed by [DepuMeng](https://huggingface.co/DepuMeng). The o
 
 [[autodoc]] ConditionalDetrImageProcessor
     - preprocess
+
+## ConditionalDetrImageProcessorFast
+
+[[autodoc]] ConditionalDetrImageProcessorFast
+    - preprocess
     - post_process_object_detection
     - post_process_instance_segmentation
     - post_process_semantic_segmentation