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/samples/python/inpaint.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+'''
+Inpainting sample.
+
+Inpainting repairs damage to images by floodfilling
+the damage with surrounding image areas.
+
+Usage:
+  inpaint.py [<image>]
+
+Keys:
+  SPACE - inpaint
+  r     - reset the inpainting mask
+  ESC   - exit
+'''
+
+# Python 2/3 compatibility
+from __future__ import print_function
+
+import numpy as np
+import cv2 as cv
+
+from common import Sketcher
+
+def main():
+    import sys
+    try:
+        fn = sys.argv[1]
+    except:
+        fn = 'fruits.jpg'
+
+    img = cv.imread(cv.samples.findFile(fn))
+    if img is None:
+        print('Failed to load image file:', fn)
+        sys.exit(1)
+
+    img_mark = img.copy()
+    mark = np.zeros(img.shape[:2], np.uint8)
+    sketch = Sketcher('img', [img_mark, mark], lambda : ((255, 255, 255), 255))
+
+    while True:
+        ch = cv.waitKey()
+        if ch == 27:
+            break
+        if ch == ord(' '):
+            res = cv.inpaint(img_mark, mark, 3, cv.INPAINT_TELEA)
+            cv.imshow('inpaint', res)
+        if ch == ord('r'):
+            img_mark[:] = img
+            mark[:] = 0
+            sketch.show()
+
+    print('Done')
+
+
+if __name__ == '__main__':
+    print(__doc__)
+    main()
+    cv.destroyAllWindows()