Add cupy support for CUDA

shmvcam.py

@@ -6,7 +6,16 @@ from __future__ import annotations
 import argparse
 import pyvirtualcam
 from pyvirtualcam import PixelFormat
-import numpy as np
+try:
+    import cupy as np
+    if not np.cuda.is_available():
+        print("No CUDA detected, using NumPy")
+        import numpy as np
+    else:
+        print("CUDA detected, using CuPy for NumPY")
+except:
+    print("No CUDA detected, using NumPy")
+    import numpy as np
 import time
 
 import asyncio