Apple's MPS backend support (#259)

* Update webui.py

添加了对于Mac的mps支持，现在可以将device设置为mps来用Mac进行推理

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tools/webui.py

@@ -131,7 +131,12 @@ def inference(
         )
 
         with torch.autocast(
-            device_type=decoder_model.device.type, dtype=args.precision
+            device_type=(
+                "cpu"
+                if decoder_model.device.type == "mps"
+                else decoder_model.device.type
+            ),
+            dtype=args.precision,
         ):
             fake_audios = decode_vq_tokens(
                 decoder_model=decoder_model,