Merge pull request #21883 from SergeyIvanov87:gapi_vpl_linux

G-API: VPL Source turn on Linux CPU version

* Turn on linux compilation

* Apply comments

* Change new files headline

* Add license header

modules/gapi/test/streaming/gapi_streaming_vpl_data_provider.cpp

@@ -16,6 +16,7 @@
 #include "streaming/onevpl/demux/async_mfp_demux_data_provider.hpp"
 #include "streaming/onevpl/source_priv.hpp"
 
+#ifdef _WIN32
 namespace opencv_test
 {
 namespace
@@ -299,4 +300,5 @@ TEST(OneVPL_Source_MFPAsyncDemux, produce_consume) {
 }
 } // namespace opencv_test
 
+#endif // _WIN32
 #endif // HAVE_ONEVPL