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352d96eb - Modularize train_text_to_image_lora_sdxl inferencing during and after training in example (#8335)

Modularize train_text_to_image_lora_sdxl inferencing during and after training in example (#8335) * Modularized the train_lora_sdxl file * Modularized the train_lora_sdxl file * Modularized the train_lora_sdxl file --------- Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>