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/objc/test/cmakelists.template

@@ -0,0 +1,46 @@
+cmake_minimum_required(VERSION 3.15)
+
+project(OpenCVTest)
+
+enable_testing()
+
+find_package(XCTest REQUIRED)
+
+# Enable C++11
+set (CMAKE_CXX_STANDARD 11)
+set (CMAKE_CXX_STANDARD_REQUIRED TRUE)
+
+set (OBJC_COMPILE_FLAGS "-fobjc-arc -fobjc-weak -fvisibility=hidden")
+set (SUPPRESS_WARNINGS_FLAGS "-Wno-incomplete-umbrella")
+set (CMAKE_C_FLAGS  "${CMAKE_C_FLAGS} ${OBJC_COMPILE_FLAGS} ${SUPPRESS_WARNINGS_FLAGS}")
+set (CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} ${OBJC_ARC_COMPILE_FLAGS} ${SUPPRESS_WARNINGS_FLAGS}")
+
+# grab the files
+file(GLOB_RECURSE test_sources "test/*\.h" "test/*\.m" "test/*\.mm" "test/*\.swift")
+
+add_library(OpenCVTest STATIC dummy/dummy.mm)
+
+enable_language(Swift)
+
+# XCTest for Framework
+xctest_add_bundle(OpenCVTestTests OpenCVTest ${test_sources} test/resources ${FRAMEWORK_DIR}/${FRAMEWORK_NAME}.framework)
+set_target_properties(OpenCVTestTests PROPERTIES
+    XCODE_ATTRIBUTE_FRAMEWORK_SEARCH_PATHS "${FRAMEWORK_DIR}"
+    XCODE_ATTRIBUTE_OTHER_SWIFT_FLAGS "-Xcc ${SUPPRESS_WARNINGS_FLAGS}"
+    XCODE_ATTRIBUTE_LD_RUNPATH_SEARCH_PATHS "${FRAMEWORK_DIR}"
+    )
+
+# link necessary Frameworks
+target_link_libraries(OpenCVTestTests PRIVATE "-framework Accelerate")
+target_link_libraries(OpenCVTestTests PRIVATE "-framework AVFoundation")
+target_link_libraries(OpenCVTestTests PRIVATE "-framework CoreMedia")
+if (NOT DEFINED IOS_ARCH)
+  target_link_libraries(OpenCVTestTests PRIVATE "-framework OpenCL")
+endif()
+
+# its OK to ignore stuff we don't know about since there will be no tests relying on it
+set_target_properties(OpenCVTestTests PROPERTIES LINK_FLAGS -Wl,-undefined,dynamic_lookup)
+
+set_source_files_properties(test/resources PROPERTIES MACOSX_PACKAGE_LOCATION Resources)
+
+xctest_add_test(XCTest.OpenCVTest OpenCVTestTests)