[fluidnumericsJoe]

Description

This PR adds an example of limiting particle timestep by local cfl in schism tutorial

Checklist

• This PR targets the correct branch (main for normal development, v3-support for v3 support)

[erikvansebille]

Thanks for adding this extra context, @fluidnumericsJoe! Below a few small comments (I can't put comments directly on the notebook in GitHub)

1. Is "altitude" the right word in the comment of cell [5]? That to me suggests (3D) height?
2. Avoid variable names like h, e and p in that same cell - make them more explicit so users understand what's going on?
3. CFL number hasn't been introduced in cell [5]. Could you move that whole cell down to the section of cell [9]? That will also make it easier to refer to this part of the tutorial directly, because all information is in one subsection
4. Make explicit that the math symbol $C$ is the same as CFL_target
5. Should we add a link to the CFL-section on the tutorial_dt_integrators too?