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/android/service/engine/AndroidManifest.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="org.opencv.engine"
+    android:versionCode="345@ANDROID_PLATFORM_ID@"
+    android:versionName="3.45">
+
+    <uses-sdk android:minSdkVersion="@ANDROID_NATIVE_API_LEVEL@" android:targetSdkVersion="22"/>
+    <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>
+
+    <application
+        android:icon="@drawable/icon"
+        android:label="@string/app_name" android:allowBackup="true">
+
+    <service android:exported="true" android:name="OpenCVEngineService" android:process=":OpenCVEngineProcess">
+        <intent-filter>
+            <action android:name="org.opencv.engine.BIND"></action>
+        </intent-filter>
+    </service>
+
+    <activity
+        android:name="org.opencv.engine.manager.ManagerActivity"
+        android:label="@string/app_name"
+        android:screenOrientation="portrait">
+        <intent-filter>
+            <action android:name="android.intent.action.MAIN" />
+            <category android:name="android.intent.category.LAUNCHER" />
+        </intent-filter>
+    </activity>
+    </application>
+</manifest>