Expose docstrings of get_current_iterate and get_current_violations

[moorepants]

Looks like we need to add some sphinx autodoc statements for these to show up here:

https://cyipopt.readthedocs.io/en/latest/reference.html

[Robbybp]

Has this been fixed? I see the docstrings on this doc page:

If there is something missing, I would be happy to add.

[moorepants]

Yes, I see them.