Add tutorial get_with_plugin

samples/tutorials/data/get_with_plugin.cc

@@ -0,0 +1,44 @@
+#include <opencv2/highgui/highgui.hpp>
+
+#include <glog/logging.h>
+
+#include "mynteye/api.h"
+
+MYNTEYE_USE_NAMESPACE
+
+int main(int argc, char *argv[]) {
+  auto &&api = API::Create(argc, argv);
+
+  api->EnablePlugin("plugins/linux-x86_64/libplugin_g_cuda9.1_opencv3.4.0.so");
+
+  api->EnableStreamData(Stream::DISPARITY_NORMALIZED);
+
+  api->Start(Source::VIDEO_STREAMING);
+
+  cv::namedWindow("frame");
+  cv::namedWindow("disparity");
+
+  while (true) {
+    api->WaitForStreams();
+
+    auto &&left_data = api->GetStreamData(Stream::LEFT);
+    auto &&right_data = api->GetStreamData(Stream::RIGHT);
+
+    cv::Mat img;
+    cv::hconcat(left_data.frame, right_data.frame, img);
+    cv::imshow("frame", img);
+
+    auto &&disp_data = api->GetStreamData(Stream::DISPARITY_NORMALIZED);
+    if (!disp_data.frame.empty()) {
+      cv::imshow("disparity", disp_data.frame);
+    }
+
+    char key = static_cast<char>(cv::waitKey(1));
+    if (key == 27 || key == 'q' || key == 'Q') {  // ESC/Q
+      break;
+    }
+  }
+
+  api->Stop(Source::ALL);
+  return 0;
+}