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/python/test/test_tracking.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+import os
+import numpy as np
+import cv2 as cv
+
+from tests_common import NewOpenCVTests, unittest
+
+class tracking_test(NewOpenCVTests):
+
+    def test_createTracker(self):
+        t = cv.TrackerMIL_create()
+        try:
+            t = cv.TrackerGOTURN_create()
+        except cv.error as e:
+            pass  # may fail due to missing DL model files
+
+
+if __name__ == '__main__':
+    NewOpenCVTests.bootstrap()