[FEAT] process-monitoring: let restart the animation

[tbouffard]

Is your feature request related to a problem? Please describe.
Currently, the only way to restart the animation is to switch to another use case and go back to the "process monitoring" use case.
This works but it is not optimal.

Describe the solution you'd like
As a first implementation, add a button to restart the animation

Describe alternatives you've considered
Keep the existing behavior which is not optimal (see description on top of this issue).

Additional context
Suggestion for the implementation:

• We could remove the CSS classes and popover as we do when we leave the use case and reapply them in a row as we do when we enter the use case.
• It's easy and inexpensive.