Keep compatibility with some custom nodes.

comfy_extras/chainner_models/model_loading.py

@@ -0,0 +1,5 @@
+from spandrel import ModelLoader
+
+def load_state_dict(state_dict):
+    print("WARNING: comfy_extras.chainner_models is deprecated and has been replaced by the spandrel library.")
+    return ModelLoader().load_from_state_dict(state_dict).eval()