[Feature]: Rotational symmetry boundary

[JTHesse]

What are you trying to do and how would you want to do it differently?

I would like to be able to utilize symmetric boundaries, especially rotational.

Is it something you currently cannot do? Is this related to an issue/problem?

Currently, not included.

Implementation details

https://journals.sagepub.com/doi/full/10.1177/1081286517711495

Would you be willing to submit a PR?

Yes

[CWillberg]

Axissymmetric https://www.sciencedirect.com/science/article/pii/S0045782518303402?ref=cra_js_challenge&fr=RR-1