Infrastructure update

[mkelley]

• Remove sbpy.cfg, moving material to pyproject.toml
• Remove astropy testrunner, addresses Notice: You are using astropy TestRunner that will be deprecated #423
• Version bump python -> 3.10
• Minor license updates
• Logo v2
• Readthedocs updates (os and python version)
• Disabled testing with pyoorb for now (need a new release of pyoorb that supports python 3.12+)
• Run compile_fieldnames as a tox command with build_docs
• Use macos-latest in github actions
• Test with numpy 2
• Update package version handling to match astropy
• Update doctests for numpy>=2
• Drop Union in type annotations (python 3.10)
• Better handling of Self type annotations. These should get revisited as our python minimum evolves.
• Update coverage options to match astropy
• Minor docstring updates (**kwargs is a dict)
• Update dev notes (we are now working on v0.7)

[github-actions]

Thank you for your contribution to sbpy, an Astropy affiliated package! 🌌 This checklist is meant to remind the package maintainers who will review this pull request of some common things to look for.

• Do the proposed changes actually accomplish desired goals?
• Do the proposed changes follow the sbpy coding guidelines?
• Are tests added/updated as required? If so, do they follow the Astropy testing guidelines?
• Are docs added/updated as required? If so, do they follow the Astropy documentation guidelines?
• Is rebase and/or squash necessary? If so, please provide the author with appropriate instructions. Also see instructions for rebase and squash.
• Did the CI pass? If no, are the failures related?
• Is a change log needed? If yes, did the change log check pass? If no, add the "no-changelog-entry-needed" label.
• Is a milestone added?

[mkelley]

Work on this has been paused until pyoorb makes a new release (see oorb/oorb#193).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.81%. Comparing base (162139f) to head (7f4bcd9).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #427      +/-   ##
==========================================
- Coverage   84.72%   81.81%   -2.92%     
==========================================
  Files          92       53      -39     
  Lines        8459     4267    -4192     
==========================================
- Hits         7167     3491    -3676     
+ Misses       1292      776     -516     

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[mkelley]

Rather than wait for pyoorb to update, I have disabled testing with pyoorb for now. This causes the project coverage to decrease, so ignore the failing codecov/project check. Otherwise, ready for review @hhsieh00 .