Added image-to-image task for ORT Pipeline (#2031)
* Add ORTModelForImageToImage for image-to-image task SwinSR
* Added image-to-image task to optimum pipeline
* Add Tests fpr ORTModelForImageToImage for image-to-image task SwinSR
* Use export=True for models from transformers, self._setup and more
* Code Refactor
* Refactor ORTModelForImageToImageIntegrationTest
