feat: Add Anima support (#860)

* Add Anima training support

* Update Anima modular training

* Use sample guidance for Anima

* Fix Anima sampling

* Limit Anima LoRA targets

* Convert Anima LoRA exports

* Fix Anima local loading

* Update Anima default model

* Pin upstream Anima diffusers

* Adjust template defaults to be consistent with other models. Update README

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Co-authored-by: Jaret Burkett (Ostris) <jaretburkett@gmail.com>

extensions_built_in/diffusion_models/__init__.py

@@ -13,6 +13,7 @@ from .ernie_image import ErnieImageModel
 from .nucleus_image import NucleusImageModel
 from .hidream.hidream_o1_model import HidreamO1Model
 from .z_image.z_image_l2p_model import ZImageL2PModel
+from .anima import AnimaModel
 from .ideogram4 import Ideogram4Model
 from .prx_pixel_t2i import PRXPixelT2IModel
 from .krea2 import Krea2Model
@@ -44,6 +45,7 @@ AI_TOOLKIT_MODELS = [
     NucleusImageModel,
     HidreamO1Model,
     ZImageL2PModel,
+    AnimaModel,
     Ideogram4Model,
     PRXPixelT2IModel,
     Krea2Model,