Expose Material::depletable in the CAPI

[pshriwise]

Description

Exposes the depletable attribute of materials in the CAPI and openmc.lib. Also makes an accessor for the attribute on the C++ class.

Along the way I noticed that the fissionable_ data member was public despite having an accessor so I moved it to the private section along with depletable_ and added a non-const accessor.

Fixes # (issue)

Checklist

• I have performed a self-review of my own code
• I have run clang-format (version 15) on any C++ source files (if applicable)
• I have followed the style guidelines for Python source files (if applicable)
• I have made corresponding changes to the documentation (if applicable)
• I have added tests that prove my fix is effective or that my feature works (if applicable)

[shimwell]

Hi @pshriwise I can't offer a full review here but did notice something that you might want to add.

The doc string for the Material class in openmc/lib/material.py might want to also include depletable so that it shows up in the read the docs.

I guess it could be added to this section
https://github.com/pshriwise/openmc/blob/58ee2f4bafbb3b1c994302ba873355ed3f623bfe/openmc/lib/material.py#L90-L104C1

[pshriwise]

Hi @pshriwise I can't offer a full review here but did notice something that you might want to add.

The doc string for the Material class in openmc/lib/material.py might want to also include depletable so that it shows up in the read the docs.

I guess it could be added to this section https://github.com/pshriwise/openmc/blob/58ee2f4bafbb3b1c994302ba873355ed3f623bfe/openmc/lib/material.py#L90-L104C1

Thanks @shimwell! Can do 👍🏻

[paulromano]

LGTM!