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/video/misc/java/test/TrackerCreateTest.java

@@ -0,0 +1,39 @@
+package org.opencv.test.video;
+
+import org.opencv.core.Core;
+import org.opencv.core.CvType;
+import org.opencv.core.CvException;
+import org.opencv.core.Mat;
+import org.opencv.core.Rect;
+import org.opencv.test.OpenCVTestCase;
+
+import org.opencv.video.Tracker;
+import org.opencv.video.TrackerGOTURN;
+import org.opencv.video.TrackerMIL;
+
+public class TrackerCreateTest extends OpenCVTestCase {
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+    }
+
+
+    public void testCreateTrackerGOTURN() {
+        try {
+            Tracker tracker = TrackerGOTURN.create();
+            assert(tracker != null);
+        } catch (CvException e) {
+            // expected, model files may be missing
+        }
+    }
+
+    public void testCreateTrackerMIL() {
+        Tracker tracker = TrackerMIL.create();
+        assert(tracker != null);
+        Mat mat = new Mat(100, 100, CvType.CV_8UC1);
+        Rect rect = new Rect(10, 10, 30, 30);
+        tracker.init(mat, rect);  // should not crash (https://github.com/opencv/opencv/issues/19915)
+    }
+
+}