diffusers

784db0ea - Add cross attention type for Sana-Sprint training in diffusers. (#11514)

Add cross attention type for Sana-Sprint training in diffusers. (#11514) * test permission * Add cross attention type for Sana-Sprint. * Add Sana-Sprint training script in diffusers. * make style && make quality; * modify the attention processor with `set_attn_processor` and change `SanaAttnProcessor3_0` to `SanaVanillaAttnProcessor` * Add import for SanaVanillaAttnProcessor * Add README file. * Apply suggestions from code review * style * Update examples/research_projects/sana/README.md --------- Co-authored-by: lawrence-cj <cjs1020440147@icloud.com> Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>