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/BackgroundSubtractorMOGTest.java

@@ -0,0 +1,43 @@
+package org.opencv.test.video;
+
+import org.opencv.test.OpenCVTestCase;
+
+public class BackgroundSubtractorMOGTest extends OpenCVTestCase {
+
+    public void testApplyMatMat() {
+        fail("Not yet implemented");
+        /*
+        BackgroundSubtractorMOG backGroundSubtract = new BackgroundSubtractorMOG();
+
+        Point bottomRight = new Point(rgbLena.cols() / 2, rgbLena.rows() / 2);
+        Point topLeft = new Point(0, 0);
+        Scalar color = new Scalar(128);
+        Mat mask = new Mat(rgbLena.size(), CvType.CV_16UC3, new Scalar(1));
+
+        Imgproc.rectangle(rgbLena, bottomRight, topLeft, color, Imgproc.FILLED);
+
+        backGroundSubtract.apply(rgbLena, mask);
+
+        Mat truth = new Mat(rgbLena.size(), rgbLena.type(), new Scalar(0));
+        Imgproc.rectangle(truth, bottomRight, topLeft, color, Imgproc.FILLED);
+        assertMatEqual(truth, rgbLena);
+        */
+    }
+
+    public void testApplyMatMatDouble() {
+        fail("Not yet implemented");
+    }
+
+    public void testBackgroundSubtractorMOG() {
+        fail("Not yet implemented");
+    }
+
+    public void testBackgroundSubtractorMOGIntIntDouble() {
+        fail("Not yet implemented");
+    }
+
+    public void testBackgroundSubtractorMOGIntIntDoubleDouble() {
+        fail("Not yet implemented");
+    }
+
+}