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_dc1394.cmake

@@ -0,0 +1,28 @@
+# --- Dc1394 ---
+if(NOT HAVE_DC1394_2 AND PKG_CONFIG_FOUND)
+  ocv_check_modules(DC1394_2 libdc1394-2)
+  if(DC1394_2_FOUND)
+    set(HAVE_DC1394_2 TRUE)
+  endif()
+endif()
+
+if(NOT HAVE_DC1394_2)
+  find_path(DC1394_INCLUDE "dc1394/dc1394.h"
+    PATHS "${DC1394_ROOT}" ENV DC1394_ROOT
+    PATH_SUFFIXES "include"
+    NO_DEFAULT_PATH)
+  find_library(DC1394_LIBRARY "dc1394"
+    PATHS "${DC1394_ROOT}" ENV DC1394_ROOT
+    PATH_SUFFIXES "lib"
+    NO_DEFAULT_PATH)
+  if(DC1394_INCLUDE AND DC1394_LIBRARY)
+    set(HAVE_DC1394_2 TRUE)
+    set(DC1394_2_INCLUDE_DIRS "${DC1394_INCLUDE}")
+    set(DC1394_2_LIBRARIES "${DC1394_LIBRARY}")
+    set(DC1394_2_VERSION "unknown") # informational
+  endif()
+endif()
+
+if(HAVE_DC1394_2)
+  ocv_add_external_target(dc1394_2 "${DC1394_2_INCLUDE_DIRS}" "${DC1394_2_LIBRARIES}" "HAVE_DC1394_2")
+endif()