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/opengl/CMakeLists.txt

@@ -0,0 +1,34 @@
+if(APPLE)
+  return()
+endif()
+
+if(UNIX)
+  find_package(X11 QUIET)
+endif()
+
+SET(OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS
+  opencv_core
+  opencv_imgproc
+  opencv_imgcodecs
+  opencv_videoio
+  opencv_highgui)
+ocv_check_dependencies(${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
+
+if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
+  project(opengl_samples)
+  ocv_include_modules_recurse(${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
+  file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+  if(NOT X11_FOUND)
+    ocv_list_filterout(all_samples "opengl_interop")
+  endif()
+  foreach(sample_filename ${all_samples})
+    ocv_define_sample(tgt ${sample_filename} opengl)
+    ocv_target_link_libraries(${tgt} PRIVATE ${OPENCV_LINKER_LIBS} ${OPENCV_OPENGL_SAMPLES_REQUIRED_DEPS})
+    if(sample_filename STREQUAL "opengl_interop.cpp")
+      ocv_target_link_libraries(${tgt} PRIVATE ${X11_LIBRARIES})
+      ocv_target_include_directories(${tgt} ${X11_INCLUDE_DIR})
+    endif()
+  endforeach()
+endif()
+
+ocv_install_example_src(opengl *.cpp *.hpp CMakeLists.txt)