Add Sequence Diagram of typical experiment execution (ROS2 simulated)

[StanSwanborn]

It could also be nice to see a sequence diagram showing a typical execution of one experiment (you can focus on ROS2 simulated experiments here), with all important calls across modules, their replies, etc.

The lifelines in the sequence diagram must correspond to the elements presented in the static figure. You should also put on the left a lifeline for representing the person executing the experiment and on the right the robots running in the simulator.