Feat/kto (#1316)

* Add PatchKTOTrainer and update model imports

* Update dpo.py

* Update __init__.py

* Delete unsloth/models/kto.py

---------

Co-authored-by: Daniel Han <danielhanchen@gmail.com>

Author: Erland366

unsloth/models/__init__.py

@@ -16,5 +16,5 @@
 from .llama   import FastLlamaModel
 from .mistral import FastMistralModel
 from .qwen2   import FastQwen2Model
-from .dpo     import PatchDPOTrainer
+from .dpo     import PatchDPOTrainer, PatchKTOTrainer
 from ._utils  import is_bfloat16_supported

unsloth/models/dpo.py

@@ -14,6 +14,7 @@
 
 __all__ = [
     "PatchDPOTrainer",
+    "PatchKTOTrainer",
 ]
 
 try:
@@ -127,4 +128,4 @@ def PatchDPOTrainer():
         pass
     pass
 pass
-
+PatchKTOTrainer = PatchDPOTrainer