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/imgproc/misc/java/test/MomentsTest.java

@@ -0,0 +1,51 @@
+package org.opencv.test.imgproc;
+
+import org.opencv.test.OpenCVTestCase;
+import org.opencv.core.Core;
+import org.opencv.core.Mat;
+import org.opencv.core.CvType;
+import org.opencv.core.Scalar;
+import org.opencv.imgproc.Imgproc;
+import org.opencv.imgproc.Moments;
+
+public class MomentsTest extends OpenCVTestCase {
+
+    Mat data;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        data = new Mat(3,3, CvType.CV_8UC1, new Scalar(1));
+        data.row(1).setTo(new Scalar(5));
+    }
+
+    public void testAll() {
+        Moments res = Imgproc.moments(data);
+        assertEquals(res.m00, 21.0, EPS);
+        assertEquals(res.m10, 21.0, EPS);
+        assertEquals(res.m01, 21.0, EPS);
+        assertEquals(res.m20, 35.0, EPS);
+        assertEquals(res.m11, 21.0, EPS);
+        assertEquals(res.m02, 27.0, EPS);
+        assertEquals(res.m30, 63.0, EPS);
+        assertEquals(res.m21, 35.0, EPS);
+        assertEquals(res.m12, 27.0, EPS);
+        assertEquals(res.m03, 39.0, EPS);
+        assertEquals(res.mu20, 14.0, EPS);
+        assertEquals(res.mu11, 0.0, EPS);
+        assertEquals(res.mu02, 6.0, EPS);
+        assertEquals(res.mu30, 0.0, EPS);
+        assertEquals(res.mu21, 0.0, EPS);
+        assertEquals(res.mu12, 0.0, EPS);
+        assertEquals(res.mu03, 0.0, EPS);
+        assertEquals(res.nu20, 0.031746031746031744, EPS);
+        assertEquals(res.nu11, 0.0, EPS);
+        assertEquals(res.nu02, 0.013605442176870746, EPS);
+        assertEquals(res.nu30, 0.0, EPS);
+        assertEquals(res.nu21, 0.0, EPS);
+        assertEquals(res.nu12, 0.0, EPS);
+        assertEquals(res.nu03, 0.0, EPS);
+    }
+
+}