feat: add flux kontext (#11985)

* add flux kontext

* add kontext to img2img

* Apply style fixes

Author: jlonge4

src/diffusers/pipelines/auto_pipeline.py

@@ -49,6 +49,7 @@
     FluxControlPipeline,
     FluxImg2ImgPipeline,
     FluxInpaintPipeline,
+    FluxKontextPipeline,
     FluxPipeline,
 )
 from .hunyuandit import HunyuanDiTPipeline
@@ -142,6 +143,7 @@
         ("flux", FluxPipeline),
         ("flux-control", FluxControlPipeline),
         ("flux-controlnet", FluxControlNetPipeline),
+        ("flux-kontext", FluxKontextPipeline),
         ("lumina", LuminaPipeline),
         ("lumina2", Lumina2Pipeline),
         ("chroma", ChromaPipeline),
@@ -171,6 +173,7 @@
         ("flux", FluxImg2ImgPipeline),
         ("flux-controlnet", FluxControlNetImg2ImgPipeline),
         ("flux-control", FluxControlImg2ImgPipeline),
+        ("flux-kontext", FluxKontextPipeline),
     ]
 )