Don't slink LoRAs when linking ckpts

The `link_ckpts` does not filter the `Lora` directory, yet this is the directory used to store Lora which are later properly linked. This change fix the function is Lora are properly ignored when linking checkpoints.

StableDiffusionUI_Voldemort_paperspace.ipynb

@@ -1084,7 +1084,7 @@
     "    print('\\nLinking .ckpt and .safetensor/.safetensors/.st files in', source_path)\n",
     "    source_path = Path(source_path)\n",
     "    for file in [p for p in source_path.rglob('*') if p.suffix in ['.ckpt', '.safetensor', '.safetensors', '.st']]:\n",
-    "        if Path(file).parent.parts[-1] not in ['hypernetworks', 'vae'] :\n",
+    "        if Path(file).parent.parts[-1] not in ['hypernetworks', 'vae', 'Lora'] :\n",
     "            if not (webui_sd_model_path / file.name):\n",
     "                print('New model:', file.name)\n",
     "            create_symlink(file, webui_sd_model_path)\n",