chore: import upstream snapshot with attribution

modules/gapi/perf/perf_precomp.hpp

@@ -0,0 +1,28 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+//
+// Copyright (C) 2018-2020 Intel Corporation
+
+
+#ifndef __OPENCV_GAPI_PERF_PRECOMP_HPP__
+#define __OPENCV_GAPI_PERF_PRECOMP_HPP__
+
+#include <cstdint>
+#include <vector>
+
+#include <opencv2/ts.hpp>
+#include <opencv2/gapi.hpp>
+#include <opencv2/gapi/imgproc.hpp>
+#include <opencv2/gapi/video.hpp>
+#include <opencv2/gapi/core.hpp>
+#include <opencv2/gapi/cpu/gcpukernel.hpp>
+#include <opencv2/gapi/gpu/ggpukernel.hpp>
+#include <opencv2/gapi/gpu/imgproc.hpp>
+#include <opencv2/gapi/gpu/core.hpp>
+#include <opencv2/gapi/operators.hpp>
+
+#include <opencv2/gapi/fluid/core.hpp>
+#include <opencv2/gapi/fluid/imgproc.hpp>
+
+#endif // __OPENCV_GAPI_PERF_PRECOMP_HPP__