Add pydantic/ipyautoui aperture settings

[mwcraig]

This makes the aperture settings a pydantic model in prep for making all settings saveable.

To do before this is ready for review:

• Redraw seeing plot if aperture_settings value changes
• Save properly
• Read settings in notebook 03
• Rewrite the multi-image photometry signature to use ApertureSettings
• Rewrite single-image photometry signature to use ApertureSettings

[mwcraig]

@JuanCab -- I think this is ready for a look. Not sure about the whole approach of making a separate settings module, but at least it would keep things organized.

[JuanCab]

Looks good as a means of getting the aperture settings read in and passed to the photometry. There are some places where I noted possible tweaks to the documentation, but otherwise it's mostly me just asking questions of why you made a choice or confirming my understanding of the function/class behavior.

[JuanCab]

Not a complaint, just curious why you switched to units as un instead of units as u, which seems more conventional?

[mwcraig]

😬 the typing expansion program changes u to you so I used un. I can change that....

[JuanCab]

Not to be difficult, but can we be consistent and use u for astropy.units?

[JuanCab]

Just so you know, ruff really hates * on imports (and PEP8 isn't terribly pleased with it either). I am wondering if despite the pain we should be explicit with the function imports. I know __all__ is controlling this to some extent, but I wonder if linters are happier in part because they know where to look for class/function definitions in these cases.

[mwcraig]

OK; I had thought this was the one case it was OK to get the namespace the way you want it.

[JuanCab]

I think if you can fix astropy.units in models.py to be addressed as u (for consistency with the rest of the code we use), this can be merged.

[JuanCab]

Not to be difficult, but can we be consistent and use u for astropy.units?

[mwcraig]

I think if you can fix astropy.units in models.py to be addressed as u (for consistency with the rest of the code we use), this can be merged.

Done for real this time -- actually, I removed the import because it and the aperture units thing were not the way to go. I'll stick to u in the future though