Merge pull request #24029 from VadimLevin:dev/vlevin/python-add-cuda-stream-to-simple-types

feat: add cuda_Stream and cuda_GpuMat to simple types mapping #24029

This patch fixes usage of `cuda::Stream` in function arguments.

Affected modules: `cudacodec`: 
[`using namespace cuda`](9dfe233020/modules/cudacodec/include/opencv2/cudacodec.hpp (L62))  in public `cudacodec.hpp` header can be removed after merge of the patch.

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake

modules/python/src2/gen2.py

@@ -231,6 +231,8 @@ simple_argtype_mapping = {
     "c_string": ArgTypeInfo("char*", FormatStrings.string, '(char*)""'),
     "string": ArgTypeInfo("std::string", FormatStrings.object, None, True),
     "Stream": ArgTypeInfo("Stream", FormatStrings.object, 'Stream::Null()', True),
+    "cuda_Stream": ArgTypeInfo("cuda::Stream", FormatStrings.object, "cuda::Stream::Null()", True),
+    "cuda_GpuMat": ArgTypeInfo("cuda::GpuMat", FormatStrings.object, "cuda::GpuMat()", True),
     "UMat": ArgTypeInfo("UMat", FormatStrings.object, 'UMat()', True),  # FIXIT: switch to CV_EXPORTS_W_SIMPLE as UMat is already a some kind of smart pointer
 }