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/java/tutorial_code/ImgProc/Pyramids/Pyramids.java

@@ -0,0 +1,67 @@
+import org.opencv.core.*;
+import org.opencv.highgui.HighGui;
+import org.opencv.imgcodecs.Imgcodecs;
+import org.opencv.imgproc.Imgproc;
+
+class PyramidsRun {
+
+    String window_name = "Pyramids Demo";
+
+    public void run(String[] args) {
+        /// General instructions
+        System.out.println("\n" +
+                " Zoom In-Out demo    \n" +
+                "------------------   \n" +
+                " * [i] -> Zoom [i]n  \n" +
+                " * [o] -> Zoom [o]ut \n" +
+                " * [ESC] -> Close program \n");
+
+        //! [load]
+        String filename = ((args.length > 0) ? args[0] : "../data/chicky_512.png");
+
+        // Load the image
+        Mat src = Imgcodecs.imread(filename);
+
+        // Check if image is loaded fine
+        if( src.empty() ) {
+            System.out.println("Error opening image!");
+            System.out.println("Program Arguments: [image_name -- default ../data/chicky_512.png] \n");
+            System.exit(-1);
+        }
+        //! [load]
+
+        //! [loop]
+        while (true){
+            //! [show_image]
+            HighGui.imshow( window_name, src );
+            //! [show_image]
+            char c = (char) HighGui.waitKey(0);
+            c = Character.toLowerCase(c);
+
+            if( c == 27 ){
+                break;
+                //![pyrup]
+            }else if( c == 'i'){
+                Imgproc.pyrUp( src, src, new Size( src.cols()*2, src.rows()*2 ) );
+                System.out.println( "** Zoom In: Image x 2" );
+                //![pyrup]
+                //![pyrdown]
+            }else if( c == 'o'){
+                Imgproc.pyrDown( src, src, new Size( src.cols()/2, src.rows()/2 ) );
+                System.out.println( "** Zoom Out: Image / 2" );
+                //![pyrdown]
+            }
+        }
+        //! [loop]
+
+        System.exit(0);
+    }
+}
+
+public class Pyramids {
+    public static void main(String[] args) {
+        // Load the native library.
+        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
+        new PyramidsRun().run(args);
+    }
+}