Merge pull request #21374 from cudawarped:fix_cuda_event_flags

Allow cv::cuda::Event to accept combinations of flags

modules/core/include/opencv2/core/cuda.hpp

@@ -924,7 +924,7 @@ public:
         INTERPROCESS   = 0x04   /**< Event is suitable for interprocess use. DisableTiming must be set */
     };
 
-    CV_WRAP explicit Event(Event::CreateFlags flags = Event::CreateFlags::DEFAULT);
+    CV_WRAP explicit Event(const Event::CreateFlags flags = Event::CreateFlags::DEFAULT);
 
     //! records an event
     CV_WRAP void record(Stream& stream = Stream::Null());
@@ -946,6 +946,7 @@ private:
 
     friend struct EventAccessor;
 };
+CV_ENUM_FLAGS(Event::CreateFlags)
 
 //! @} cudacore_struct