Compare Python & NumPy versions from configure/build time to runtime

[PhilMiller]

Fixes #545

Additions

• Add src/core/NGen_Python_Build_Versions.in] to have CMake generate a corresponding .cpp file with the Python/NumPy versions

Changes

• Get versions of Python and NumPy seen at runtime
• Check runtime versions against configure/build-time versions

Testing

1. Tests fail if I pip install numpy==1.24.0 in my virtual environment after building with 1.25.0 installed

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 ➡️

[PhilMiller]

On reading a bit further into this, it will maybe be more straightforward to just do the full-up string comparisons, rather than component-wise comparisons.

• Python: platform.python_version()
• NumPy: np.version.full_version

[PhilMiller]

This file's change was something I noticed as I was implementing the main goal of this PR

[PhilMiller]

This change was something I noticed as I was implementing the main goal of this PR

[PhilMiller]

The PR template checklist says this

Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)

Are we actually doing this? This PR has been noted as something that should be communicated to users. I just don't see anything at all in the change log

[donaldwj]

I see how this make the compile time python version available but where is the runtime check? I would have expected modification to Ngen.cpp where the runtime check is made.

[mattw-nws]

I'm assuming @donaldwj found the runtime checks he referred to, but yes, for future reference, they're here:
https://github.com/NOAA-OWP/ngen/pull/558/files#diff-3605ac7d3b4e8fb163eb3ee233ee2573740249d9961efc54675c0a571196dd4eR102-R108