Merge pull request #23595 from TolyaTalamanov:at/implement-openvino-backend

[G-API] Implement OpenVINO 2.0 backend #23595

### Pull Request Readiness Checklist

Implemented basic functionality for `OpenVINO` 2.0 G-API backend.

#### Overview
- [x] Implement `Infer` kernel with some of essential configurable parameters + IR/Blob models format support.
- [ ] Implement the rest of kernels: `InferList`, `InferROI`, `Infer2` + other configurable params (e.g reshape)
- [x] Asyncrhonous execution support
- [ ] Remote context support

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
- [ ] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [x] 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/gapi/misc/python/shadow_gapi.hpp

@@ -80,5 +80,6 @@ namespace detail
 {
     gapi::GNetParam GAPI_EXPORTS_W strip(gapi::ie::PyParams params);
     gapi::GNetParam GAPI_EXPORTS_W strip(gapi::onnx::PyParams params);
+    gapi::GNetParam GAPI_EXPORTS_W strip(gapi::ov::PyParams params);
 } // namespace detail
 } // namespace cv