Tf2_sensor_msgs porting to ROS2

Hi @prasenjitdan: It’s great that you and your team are willing to port (and I assume assist with the maintenance) of over two dozen ROS packages! It’s quite unprecedented!

Could the community have a bit more insight into how your team is funded and what your long-term interest is? It would be unfortunate if there was a burst of effort put in and then these packages were then left orphaned.