ROS2 for real-time applications

[sagniknitr]

Check this packages in the ros 2 github repo :

1. https://github.com/ros2/realtime_support.
2. https://github.com/ros2/tlsf/tree/master/tlsf

There is also a demo for the realtime support :

1. https://github.com/ros2/demos/tree/master/pendulum_control