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/cmake/detect_msmf.cmake

@@ -0,0 +1,22 @@
+# --- VideoInput/Microsoft Media Foundation ---
+if(NOT HAVE_MSMF)
+  check_include_file(mfapi.h HAVE_MFAPI)
+  if(HAVE_MFAPI)
+    set(HAVE_MSMF TRUE)
+  endif()
+endif()
+
+if(HAVE_MSMF)
+  if(WITH_MSMF_DXVA)
+    check_include_file(d3d11.h HAVE_D3D11)
+    check_include_file(d3d11_4.h HAVE_D3D11_4)
+    if(HAVE_D3D11 AND HAVE_D3D11_4)
+      set(HAVE_MSMF_DXVA TRUE)
+    endif()
+  endif()
+  set(defs "HAVE_MSMF")
+  if(HAVE_MSMF_DXVA)
+    list(APPEND defs "HAVE_MSMF_DXVA")
+  endif()
+  ocv_add_external_target(msmf "" "" "${defs}")
+endif()