Merge pull request #20157 from mpashchenkov:mp/ocv-gapi-pnetworks

G-API: Python. Wrapper for networks.

* Python networks

* Added pyopencv_to

* Changed work with pyopencv_to

modules/gapi/misc/python/shadow_gapi.hpp

@@ -58,7 +58,6 @@ namespace cv
 
    namespace gapi
    {
-       GAPI_EXPORTS_W gapi::GNetPackage networks(const cv::gapi::ie::PyParams& params);
        namespace wip
        {
            class GAPI_EXPORTS_W IStreamSource { };