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/java/sbt/project/build.scala

@@ -0,0 +1,22 @@
+import sbt._
+import Keys._
+
+object OpenCVJavaDemoBuild extends Build {
+  def scalaSettings = Seq(
+    scalaVersion := "2.10.0",
+    scalacOptions ++= Seq(
+      "-optimize",
+      "-unchecked",
+      "-deprecation"
+    )
+  )
+
+  def buildSettings =
+    Project.defaultSettings ++
+    scalaSettings
+
+  lazy val root = {
+    val settings = buildSettings ++ Seq(name := "OpenCVJavaDemo")
+    Project(id = "OpenCVJavaDemo", base = file("."), settings = settings)
+  }
+}