Add __cuda_stream__ protocol to driver.CUStream class (#1225)

Author: kkraus14

cuda_bindings/cuda/bindings/driver.pyx.in

@@ -7101,8 +7101,11 @@ cdef class CUstream:
         return <void_ptr>self._pvt_ptr[0]
     def getPtr(self):
         return <void_ptr>self._pvt_ptr
+    def __cuda_stream__(self):
+        return (0, <uintptr_t><void_ptr>(self._pvt_ptr[0]))
 {{endif}}
 
+
 {{if 'CUgraphicsResource' in found_types}}
 
 cdef class CUgraphicsResource: