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/MediaExtensions/Common/CritSec.h

@@ -0,0 +1,62 @@
+#pragma once
+
+//////////////////////////////////////////////////////////////////////////
+//  CritSec
+//  Description: Wraps a critical section.
+//////////////////////////////////////////////////////////////////////////
+
+class CritSec
+{
+public:
+    CRITICAL_SECTION m_criticalSection;
+public:
+    CritSec()
+    {
+        InitializeCriticalSectionEx(&m_criticalSection, 100, 0);
+    }
+
+    ~CritSec()
+    {
+        DeleteCriticalSection(&m_criticalSection);
+    }
+
+    _Acquires_lock_(m_criticalSection)
+    void Lock()
+    {
+        EnterCriticalSection(&m_criticalSection);
+    }
+
+    _Releases_lock_(m_criticalSection)
+    void Unlock()
+    {
+        LeaveCriticalSection(&m_criticalSection);
+    }
+};
+
+
+//////////////////////////////////////////////////////////////////////////
+//  AutoLock
+//  Description: Provides automatic locking and unlocking of a
+//               of a critical section.
+//
+//  Note: The AutoLock object must go out of scope before the CritSec.
+//////////////////////////////////////////////////////////////////////////
+
+class AutoLock
+{
+private:
+    CritSec *m_pCriticalSection;
+public:
+    _Acquires_lock_(m_pCriticalSection)
+    AutoLock(CritSec& crit)
+    {
+        m_pCriticalSection = &crit;
+        m_pCriticalSection->Lock();
+    }
+
+    _Releases_lock_(m_pCriticalSection)
+    ~AutoLock()
+    {
+        m_pCriticalSection->Unlock();
+    }
+};