终端显示检测到的物体信息 (#7570)

* Add carla_traffic_sign_detection module: YOLO traffic sign detection and vehicle control documentation

* Compress screenshots for carla_traffic_sign_detection

* fix: compress and rename images to english names (tu->detection_result,driver_view,aerial_view,test_environment)

* 在屏幕上显示当前车速

* 在终端显示检测到的物体数量和类别

Author: 123makabak