Add test for prolate spheroid

[Sparks29032]

Added test data for prolate spheroid similar to that of oblate spheroid from this commit. Same function is used for all spheroid morphs. Closes #86.

Not user-facing, so no news item added.

[github-actions]

Warning! No news item is found for this PR. If this is a user-facing change/feature/fix,
please add a news item by copying the format from news/TEMPLATE.rst.
For best practices, please visit
https://scikit-package.github.io/scikit-package/frequently-asked-questions.html#billinge-group-standards.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.23%. Comparing base (ed2c088) to head (627c9a5).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #219   +/-   ##
=======================================
  Coverage   97.23%   97.23%           
=======================================
  Files          20       20           
  Lines         903      905    +2     
=======================================
+ Hits          878      880    +2     
  Misses         25       25           

Files with missing lines	Coverage Δ
tests/test_morphshape.py	95.94% <100.00%> (+0.11%)	⬆️

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[sbillinge]

Not user-facing, so no news item added.

no problem. The preferred workflow for this is to install scikit-package in your env and run package add no-news -m "why not needed" (though double check the syntax.

[Sparks29032]

Not user-facing, so no news item added.

no problem. The preferred workflow for this is to install scikit-package in your env and run package add no-news -m "why not needed" (though double check the syntax.

Got it.