Add macroscopic maxwell solver feature in PICMI WarpX

[GivenChen]

Hi, I am using PICMI to run WarpX since it offers great flexibility in controlling the particle and field data when running the simulation. However, I found that PICMI doesn't have the feature of using the macroscopic Maxwell solver. I am wondering if it is possible that the macroscopic Maxwell solver option can be added to Python PICMI WarpX?

[RemiLehe]

That's a good point, thanks. We will add it in PICMI.

[GivenChen]

Thank you~