feat: Add support for Apple MPS devices

Update the `get_device_list` function to detect and include the 'mps' (Metal Performance Shaders) backend if it's available through PyTorch.

This allows users on Apple Silicon hardware to see and select their GPU for accelerated computations.

Author: pollockjj

__init__.py

@@ -47,6 +47,11 @@ def get_device_list():
             devs += [f"xpu:{i}" for i in range(torch.xpu.device_count())]
     except Exception:
         pass
+    try:
+        if torch.backends.mps.is_available():
+            devs += ["mps"]
+    except Exception:
+        pass
     return devs
 
 def set_current_device(device):