Adding impl/test crumbs for requirements

[john-science]

What is the change?

Adding impl/test crumbs for assorted requirements.

Why is the change being made?

This is part of on-going requirements work.

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Checklist

• This PR has only one purpose or idea.
• Tests have been added/updated to verify that the new/changed code works.

• The code style follows good practices.
• The commit message(s) follow good practices.

• The release notes (location doc/release/0.X.rst) are up-to-date with any important changes.
• The documentation is still up-to-date in the doc folder.
• No requirements were altered.
• The dependencies are still up-to-date in pyproject.toml.

[keckler]

I don't think this is in the most appropriate place? I would assume this would be better put into somewhere in isotopicOptions, but let me know if I'm misunderstanding your intent.

[keckler]

Hm, or maybe this is just one part of it. I guess the user needs to define composite objects with the DEPLETABLE flag, which would happen in other parts of the blueprints.

[john-science]

This is just a "blueprint requirement", so I put it in the most general place in the blueprints.

That's really as far as my thought process went.

Hmmm

[keckler]

Okay, well it is good where it is, by the logic of my second comment above. But during the upcoming "real" review, I anticipate we'll probably ask for another impl in the isotopicOptions.

[john-science]

Updated. Take a look.

[keckler]

Thanks for the additions!