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/platforms/ios/cmake/Toolchains/xcodebuild_wrapper.in

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# Force 'Debug' configuration
+# Details: https://github.com/opencv/opencv/issues/13856
+if [[ "$@" =~ "-project CMAKE_TRY_COMPILE.xcodeproj" && -z "${OPENCV_SKIP_XCODEBUILD_FORCE_TRYCOMPILE_DEBUG}" ]]; then
+  ARGS=()
+  for ((i=1; i<=$#; i++))
+  do
+    arg=${!i}
+    ARGS+=("$arg")
+    if [[ "$arg" == "-configuration" ]]; then
+      ARGS+=("Debug")
+      i=$(($i+1))
+    fi
+  done
+  set -- "${ARGS[@]}"
+fi
+
+@CMAKE_MAKE_PROGRAM@ @XCODEBUILD_EXTRA_ARGS@ $*