Coordinate fixes

[Cadair]

This is the dkist part of a multi-project improvement to the coordinate info saved into ASDF.

See Also:

• https://bitbucket.org/dkistdc/dkist-inventory/pull-requests/39
• https://bitbucket.org/dkistdc/dkist-data-simulator/pull-requests/42
• Spring cleaning coordinate frames spacetelescope/gwcs#457

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a4f2172) 98.28% compared to head (6a45926) 97.68%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #305      +/-   ##
==========================================
- Coverage   98.28%   97.68%   -0.61%     
==========================================
  Files          40       32       -8     
  Lines        2454     1854     -600     
==========================================
- Hits         2412     1811     -601     
- Misses         42       43       +1     

Files	Coverage Δ
dkist/dataset/loader.py	100.00% <ø> (ø)
dkist/io/asdf/converters/__init__.py	100.00% <100.00%> (ø)
dkist/io/asdf/converters/dataset.py	94.87% <100.00%> (+1.32%)	⬆️
dkist/io/asdf/converters/models.py	98.46% <100.00%> (+0.50%)	⬆️
dkist/io/asdf/entry_points.py	100.00% <100.00%> (ø)
dkist/wcs/models.py	100.00% <100.00%> (ø)

... and 9 files with indirect coverage changes

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[SolarDrew]

LGTM 👍 I'm still playing a bit with getting the updated asdfs through my crop tests, but they've taken everything I've been able to through at them so far and the remaining issues are at my end so I don't see why they should block this being merged.