feat: ComfyUI can be run on the specified Ascend NPU (Comfy-Org#9663)

* feature: Set the Ascend NPU to use a single one

* Enable the `--cuda-device` parameter to support both CUDA and Ascend NPUs simultaneously.

* Make the code just set the ASCENT_RT_VISIBLE_DEVICES environment variable without any other edits to master branch

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Co-authored-by: Jedrzej Kosinski <kosinkadink1@gmail.com>

Author: muxuezzz

main.py

@@ -127,6 +127,7 @@ def execute_script(script_path):
     if args.cuda_device is not None:
         os.environ['CUDA_VISIBLE_DEVICES'] = str(args.cuda_device)
         os.environ['HIP_VISIBLE_DEVICES'] = str(args.cuda_device)
+        os.environ["ASCEND_RT_VISIBLE_DEVICES"] = str(args.cuda_device)
         logging.info("Set cuda device to: {}".format(args.cuda_device))
 
     if args.oneapi_device_selector is not None: