GitLab

* Add support for callback_on_step_end for
AuraFlowPipeline and LuminaText2ImgPipeline.

* Apply the suggestions from code review for lumina and auraflow
Co-authored-by: hlky <hlky@hlky.ac>

* Update missing inputs and imports.

* Add input field.

* Apply suggestions from code review-2
Co-authored-by: hlky <hlky@hlky.ac>

* Apply the suggestions from review for unused imports.
Co-authored-by: hlky <hlky@hlky.ac>

* make style.

* Update pipeline_aura_flow.py

* Update pipeline_lumina.py

* Update pipeline_lumina.py

* Update pipeline_aura_flow.py

* Update pipeline_lumina.py

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Co-authored-by: hlky <hlky@hlky.ac>