Add a new SanaSprintImg2ImgPipeline class to the diffusers library as an image-to-image variant of the…

Add a new SanaSprintImg2ImgPipeline class to the diffusers library as an image-to-image variant of the…: a task in HF ML Tasksmith (Harbor dataset). Constructor: accepts tokenizer , text encoder (Gemma2), vae (AutoencoderDC), transformer (SanaTransformer2DModel), and scheduler ( SCMScheduler …

The task

**Constructor:** accepts `tokenizer`, `text_encoder` (Gemma2), `vae` (AutoencoderDC), `transformer` (SanaTransformer2DModel), and `scheduler` (`SCMScheduler`, using the existing Sana Sprint SCM timestep and model-input conventions). The `vae_scale_factor` is derived from `vae.config.encoder_block_out_channels`. A…

Part of FineEnvs/HF_ML_Tasksmith.