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/winrt/ImageManipulations/App.xaml.cpp

@@ -0,0 +1,116 @@
+//*********************************************************
+//
+// Copyright (c) Microsoft. All rights reserved.
+// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
+// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
+// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
+// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
+//
+//*********************************************************
+
+//
+// App.xaml.cpp
+// Implementation of the App.xaml class.
+//
+
+#include "pch.h"
+#include "MainPage.xaml.h"
+#include "AdvancedCapture.xaml.h"
+#include "Common\SuspensionManager.h"
+
+using namespace SDKSample;
+using namespace SDKSample::Common;
+using namespace SDKSample::MediaCapture;
+
+using namespace Concurrency;
+using namespace Platform;
+using namespace Windows::ApplicationModel;
+using namespace Windows::ApplicationModel::Activation;
+using namespace Windows::Foundation;
+using namespace Windows::Foundation::Collections;
+using namespace Windows::UI::Core;
+using namespace Windows::UI::Xaml;
+using namespace Windows::UI::Xaml::Controls;
+using namespace Windows::UI::Xaml::Controls::Primitives;
+using namespace Windows::UI::Xaml::Data;
+using namespace Windows::UI::Xaml::Input;
+using namespace Windows::UI::Xaml::Interop;
+using namespace Windows::UI::Xaml::Media;
+using namespace Windows::UI::Xaml::Navigation;
+
+/// <summary>
+/// Initializes the singleton application object.  This is the first line of authored code
+/// executed, and as such is the logical equivalent of main() or WinMain().
+/// </summary>
+App::App()
+{
+    InitializeComponent();
+    this->Suspending += ref new SuspendingEventHandler(this, &SDKSample::App::OnSuspending);
+}
+
+/// <summary>
+/// Invoked when the application is launched normally by the end user.  Other entry points will
+/// be used when the application is launched to open a specific file, to display search results,
+/// and so forth.
+/// </summary>
+/// <param name="pArgs">Details about the launch request and process.</param>
+void App::OnLaunched(LaunchActivatedEventArgs^ pArgs)
+{
+    this->LaunchArgs = pArgs;
+
+    // Do not repeat app initialization when already running, just ensure that
+    // the window is active
+    if (pArgs->PreviousExecutionState == ApplicationExecutionState::Running)
+    {
+        Window::Current->Activate();
+        return;
+    }
+
+    // Create a Frame to act as the navigation context and associate it with
+    // a SuspensionManager key
+    auto rootFrame = ref new Frame();
+    SuspensionManager::RegisterFrame(rootFrame, "AppFrame");
+
+    auto prerequisite = task<void>([](){});
+    if (pArgs->PreviousExecutionState == ApplicationExecutionState::Terminated)
+    {
+        // Restore the saved session state only when appropriate, scheduling the
+        // final launch steps after the restore is complete
+        prerequisite = SuspensionManager::RestoreAsync();
+    }
+    prerequisite.then([=]()
+    {
+        // When the navigation stack isn't restored navigate to the first page,
+        // configuring the new page by passing required information as a navigation
+        // parameter
+        if (rootFrame->Content == nullptr)
+        {
+            if (!rootFrame->Navigate(TypeName(MainPage::typeid)))
+            {
+                throw ref new FailureException("Failed to create initial page");
+            }
+        }
+
+        // Place the frame in the current Window and ensure that it is active
+        Window::Current->Content = rootFrame;
+        Window::Current->Activate();
+    }, task_continuation_context::use_current());
+}
+
+/// <summary>
+/// Invoked when application execution is being suspended.  Application state is saved
+/// without knowing whether the application will be terminated or resumed with the contents
+/// of memory still intact.
+/// </summary>
+/// <param name="sender">The source of the suspend request.</param>
+/// <param name="e">Details about the suspend request.</param>
+void App::OnSuspending(Object^ sender, SuspendingEventArgs^ e)
+{
+    (void) sender;	// Unused parameter
+
+    auto deferral = e->SuspendingOperation->GetDeferral();
+    SuspensionManager::SaveAsync().then([=]()
+    {
+        deferral->Complete();
+    });
+}