Ngen conf package

[hellkite500]

A python package for helping to programmatically build ngen realization files. It will be used alongside the ngen-cal package (and that package will likely get refactored into a similar namespace package ngen.cal???)

Additions

• ngen.config package

Testing

1. The package contains it own set of unit tests, and a workflow was added to exercise them.

Checklist

• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows project standards (link if applicable)
• Passes all existing automated tests
• Any change in functionality is tested
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged / future todos are captured in comments
• Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• Reviewers requested with the Reviewers tool ➡️

Target Environment support

• Linux
• MacOS

[robertbartel]

Overall, I think this looks good.

I'm curious whether it would make sense to add a complementary ModuleConfig type instead of putting, e.g., CFE in the same hierarchy as BMIC, but that can be handled in the furture if deemed appropriate.

[donaldwj]

One question will the fact that time from the NetCDF is returned in int64 (usually non seconds from Jan 1 1970 12:00, ,b/c of NumPy defaults) be problematic for this code?

[donaldwj]

As we have a working NetCDF provider this will, as already noted need to be updated but not necessarily in this pull request.