Allow checkpoints with .pt and .bin extensions.

folder_paths.py

 import os
 import time
 
-supported_ckpt_extensions = set(['.ckpt', '.pth', '.safetensors'])
 supported_pt_extensions = set(['.ckpt', '.pt', '.bin', '.pth', '.safetensors'])
 
 folder_names_and_paths = {}
 
 base_path = os.path.dirname(os.path.realpath(__file__))
 models_dir = os.path.join(base_path, "models")
-folder_names_and_paths["checkpoints"] = ([os.path.join(models_dir, "checkpoints")], supported_ckpt_extensions)
+folder_names_and_paths["checkpoints"] = ([os.path.join(models_dir, "checkpoints")], supported_pt_extensions)
 folder_names_and_paths["configs"] = ([os.path.join(models_dir, "configs")], [".yaml"])
 
 folder_names_and_paths["loras"] = ([os.path.join(models_dir, "loras")], supported_pt_extensions)