ROS 2 Collaboration Bulletin Board

Hi, I have already ported the ROS2 cv_bridge which is necessary for ROS2 image processing in the perception applications with OpenCV, and I am trying to upstream it to hopefully benefit more ROS2 users, please let me know if you find any problems, thanks !

Here is some update to the ros2 cv_bridge, now ros2_cv_bridge has been officially upstream to the original ros-perception vision_opencv with a dedicated ros2 branch, please submit/fix issues there when you find to make it benefit more community users from now on, thanks a lot !