feat: 切换后端至PaddleOCR-NCNN，切换工程为CMake

1.项目后端整体迁移至PaddleOCR-NCNN算法，已通过基本的兼容性测试
2.工程改为使用CMake组织，后续为了更好地兼容第三方库，不再提供QMake工程
3.重整权利声明文件，重整代码工程，确保最小化侵权风险

Log: 切换后端至PaddleOCR-NCNN，切换工程为CMake
Change-Id: I4d5d2c5d37505a4a24b389b1a4c5d12f17bfa38c

3rdparty/opencv-4.5.4/modules/gapi/test/common/gapi_video_tests.hpp

@@ -0,0 +1,44 @@
+// 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) 2020 Intel Corporation
+
+#ifndef OPENCV_GAPI_VIDEO_TESTS_HPP
+#define OPENCV_GAPI_VIDEO_TESTS_HPP
+
+#include "gapi_video_tests_common.hpp"
+
+namespace opencv_test
+{
+GAPI_TEST_FIXTURE_SPEC_PARAMS(BuildOptFlowPyramidTest,
+                              FIXTURE_API(std::string,int,int,bool,int,int,bool), 7,
+                              fileName, winSize, maxLevel, withDerivatives, pyrBorder,
+                              derivBorder, tryReuseInputImage)
+
+GAPI_TEST_FIXTURE_SPEC_PARAMS(OptFlowLKTest, FIXTURE_API(std::string,int,tuple<int,int>,int,
+                                                         cv::TermCriteria),
+                              5, fileNamePattern, channels, pointsNum, winSize, criteria)
+
+GAPI_TEST_FIXTURE_SPEC_PARAMS(OptFlowLKTestForPyr, FIXTURE_API(std::string,int,tuple<int,int>,int,
+                                                               cv::TermCriteria,bool),
+                              6, fileNamePattern, channels, pointsNum, winSize, criteria,withDeriv)
+
+GAPI_TEST_FIXTURE_SPEC_PARAMS(BuildPyr_CalcOptFlow_PipelineTest,
+                              FIXTURE_API(std::string,int,int,bool), 4,
+                              fileNamePattern, winSize, maxLevel, withDerivatives)
+
+GAPI_TEST_FIXTURE_SPEC_PARAMS(BackgroundSubtractorTest, FIXTURE_API(tuple<cv::gapi::video::BackgroundSubtractorType,double>,
+                                                                    int, bool, double, std::string, std::size_t),
+                              6, typeAndThreshold, histLength, detectShadows, learningRate, filePath, testNumFrames)
+
+GAPI_TEST_FIXTURE_SPEC_PARAMS(KalmanFilterTest, FIXTURE_API(int, int, int, int, int), 5, type, dDim, mDim, cDim, numIter)
+
+GAPI_TEST_FIXTURE_SPEC_PARAMS(KalmanFilterNoControlTest, FIXTURE_API(int, int, int, int), 4, type, dDim, mDim, numIter)
+
+GAPI_TEST_FIXTURE_SPEC_PARAMS(KalmanFilterCircleSampleTest, FIXTURE_API(int, int), 2, type, numIter)
+
+} // opencv_test
+
+
+#endif // OPENCV_GAPI_VIDEO_TESTS_HPP