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/videoio/misc/java/test/VideoCaptureTest.java

@@ -0,0 +1,64 @@
+package org.opencv.test.videoio;
+
+import java.util.List;
+
+import org.opencv.core.Size;
+import org.opencv.videoio.Videoio;
+import org.opencv.videoio.VideoCapture;
+
+import org.opencv.test.OpenCVTestCase;
+
+public class VideoCaptureTest extends OpenCVTestCase {
+
+    private VideoCapture capture;
+    private boolean isOpened;
+    private boolean isSucceed;
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+
+        capture = null;
+        isTestCaseEnabled = false;
+        isSucceed = false;
+        isOpened = false;
+    }
+
+    public void testGrab() {
+        capture = new VideoCapture();
+        isSucceed = capture.grab();
+        assertFalse(isSucceed);
+    }
+
+    public void testIsOpened() {
+        capture = new VideoCapture();
+        assertFalse(capture.isOpened());
+    }
+
+    public void testDefaultConstructor() {
+        capture = new VideoCapture();
+        assertNotNull(capture);
+        assertFalse(capture.isOpened());
+    }
+
+    public void testConstructorWithFilename() {
+        capture = new VideoCapture("some_file.avi");
+        assertNotNull(capture);
+    }
+
+    public void testConstructorWithFilenameAndExplicitlySpecifiedAPI() {
+        capture = new VideoCapture("some_file.avi", Videoio.CAP_ANY);
+        assertNotNull(capture);
+    }
+
+    public void testConstructorWithIndex() {
+        capture = new VideoCapture(0);
+        assertNotNull(capture);
+    }
+
+    public void testConstructorWithIndexAndExplicitlySpecifiedAPI() {
+        capture = new VideoCapture(0, Videoio.CAP_ANY);
+        assertNotNull(capture);
+    }
+
+}