add _model_to_exptype method to AbstractModelLibrary

[braingram]

This PR adds a method _model_to_exptype to AbstractModelLibrary to allow jwst to control how exptype is determined when ModelLibrary is created from a list of models.

With spacetelescope/jwst#8918 this will address JP-3787.

jwst regtests: https://github.com/spacetelescope/RegressionTests/actions/runs/11487054306

Romancal regtests: https://github.com/spacetelescope/RegressionTests/actions/runs/11487038188
show 1 unrelated failure matching main: https://github.com/spacetelescope/RegressionTests/actions/runs/11470564200/job/31920046203

Fixes #200

Tasks

• update or add relevant tests
• update relevant docstrings and / or docs/ page
• Does this PR change any API used downstream? (if not, label with no-changelog-entry-needed)
  • write news fragment(s) in changes/: echo "changed something" > changes/<PR#>.<changetype>.rst (see below for change types)
  • run regression tests with this branch installed ("git+https://github.com/<fork>/stpipe@<branch>")
    • jwst regression test
    • romancal regression test

news fragment change types...

• changes/<PR#>.feature.rst: new feature
• changes/<PR#>.bugfix.rst: fixes an issue
• changes/<PR#>.doc.rst: documentation change
• changes/<PR#>.removal.rst: deprecation or removal of public API
• changes/<PR#>.misc.rst: infrastructure or miscellaneous change

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.62%. Comparing base (1e50496) to head (558c952).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #201      +/-   ##
==========================================
- Coverage   94.62%   94.62%   -0.01%     
==========================================
  Files          37       37              
  Lines        3126     3125       -1     
==========================================
- Hits         2958     2957       -1     
  Misses        168      168              

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[emolter]

Don't we also need to change the way exptype is set on this line? Other than that this looks good pending passing regtests

[braingram]

Don't we also need to change the way exptype is set on this line? Other than that this looks good pending passing regtests

Thanks for taking a look. That method is overridden in the jwst subclass and updated in spacetelescope/jwst#8918

[emolter]

Don't we also need to change the way exptype is set on this line? Other than that this looks good pending passing regtests

Thanks for taking a look. That method is overridden in the jwst subclass and updated in spacetelescope/jwst#8918

Missed that, thanks, looks good