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/samples/cpp/tutorial_code/videoio/video-write/video-write.cpp

@@ -0,0 +1,95 @@
+#include <iostream>	// for standard I/O
+#include <string>   // for strings
+
+#include <opencv2/core.hpp>     // Basic OpenCV structures (cv::Mat)
+#include <opencv2/videoio.hpp>  // Video write
+
+using namespace std;
+using namespace cv;
+
+static void help()
+{
+    cout
+        << "------------------------------------------------------------------------------" << endl
+        << "This program shows how to write video files."                                   << endl
+        << "You can extract the R or G or B color channel of the input video."              << endl
+        << "Usage:"                                                                         << endl
+        << "./video-write <input_video_name> [ R | G | B] [Y | N]"                          << endl
+        << "------------------------------------------------------------------------------" << endl
+        << endl;
+}
+
+int main(int argc, char *argv[])
+{
+    help();
+
+    if (argc != 4)
+    {
+        cout << "Not enough parameters" << endl;
+        return -1;
+    }
+
+    const string source      = argv[1];           // the source file name
+    const bool askOutputType = argv[3][0] =='Y';  // If false it will use the inputs codec type
+
+    VideoCapture inputVideo(source);              // Open input
+    if (!inputVideo.isOpened())
+    {
+        cout  << "Could not open the input video: " << source << endl;
+        return -1;
+    }
+
+    string::size_type pAt = source.find_last_of('.');                  // Find extension point
+    const string NAME = source.substr(0, pAt) + argv[2][0] + ".avi";   // Form the new name with container
+    int ex = static_cast<int>(inputVideo.get(CAP_PROP_FOURCC));     // Get Codec Type- Int form
+
+    // Transform from int to char via Bitwise operators
+    char EXT[] = {(char)(ex & 0XFF) , (char)((ex & 0XFF00) >> 8),(char)((ex & 0XFF0000) >> 16),(char)((ex & 0XFF000000) >> 24), 0};
+
+    Size S = Size((int) inputVideo.get(CAP_PROP_FRAME_WIDTH),    // Acquire input size
+                  (int) inputVideo.get(CAP_PROP_FRAME_HEIGHT));
+
+    VideoWriter outputVideo;                                        // Open the output
+    if (askOutputType)
+        outputVideo.open(NAME, ex=-1, inputVideo.get(CAP_PROP_FPS), S, true);
+    else
+        outputVideo.open(NAME, ex, inputVideo.get(CAP_PROP_FPS), S, true);
+
+    if (!outputVideo.isOpened())
+    {
+        cout  << "Could not open the output video for write: " << source << endl;
+        return -1;
+    }
+
+    cout << "Input frame resolution: Width=" << S.width << "  Height=" << S.height
+         << " of nr#: " << inputVideo.get(CAP_PROP_FRAME_COUNT) << endl;
+    cout << "Input codec type: " << EXT << endl;
+
+    int channel = 2; // Select the channel to save
+    switch(argv[2][0])
+    {
+    case 'R' : channel = 2; break;
+    case 'G' : channel = 1; break;
+    case 'B' : channel = 0; break;
+    }
+    Mat src, res;
+    vector<Mat> spl;
+
+    for(;;) //Show the image captured in the window and repeat
+    {
+        inputVideo >> src;              // read
+        if (src.empty()) break;         // check if at end
+
+        split(src, spl);                // process - extract only the correct channel
+        for (int i =0; i < 3; ++i)
+            if (i != channel)
+                spl[i] = Mat::zeros(S, spl[0].type());
+       merge(spl, res);
+
+       //outputVideo.write(res); //save or
+       outputVideo << res;
+    }
+
+    cout << "Finished writing" << endl;
+    return 0;
+}