RCAL-977 - Version datamodels

[braingram]

Resolves RCAL-977

This PR (with the corresponding RAD changes: spacetelescope/rad#528) adds support for versioning DataModels. The approach is similar to #305 where with this PR the link between a specific tag and Node class and removed. Instead Node classes have a tag "pattern" (wildcard) which can match one of multiple tag versions. New Node instances use the latest tag version except for when they are read from an ASDF file (where the version read from the file is used).

Regression tests all pass: https://github.com/spacetelescope/RegressionTests/actions/runs/12611441068

Once this PR (and spacetelescope/rad#528) are merged changes to schema can now be made in a way that retains opening existing files. To provide an example (and a toy change for reviewers to test):
braingram/rad#1
braingram#1
add a new entry to cal_step named two_step. Installing these branches allows creating and writing files with the new cal_step-2.0.0 node but retains reading (and rewriting) of cal_step-1.0.0 nodes.

Tasks

• Update or add relevant roman_datamodels 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).
  • Start a romancal regression test (https://github.com/spacetelescope/RegressionTests/actions/workflows/romancal.yml) with this branch installed ("git+https://github.com/<fork>/rad@<branch>").

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

Attention: Patch coverage is 91.26214% with 9 lines in your changes missing coverage. Please review.

Project coverage is 97.35%. Comparing base (087a60d) to head (d3d5bbf).
Report is 96 commits behind head on main.

Files with missing lines	Patch %	Lines
src/roman_datamodels/stnode/_tagged.py	78.26%	5 Missing ⚠️
tests/test_stnode.py	76.92%	3 Missing ⚠️
tests/conftest.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #445      +/-   ##
==========================================
- Coverage   97.56%   97.35%   -0.21%     
==========================================
  Files          30       36       +6     
  Lines        2788     3252     +464     
==========================================
+ Hits         2720     3166     +446     
- Misses         68       86      +18     

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[schlafly]

Is this something you'd want to present on a Thursday tag up?

[braingram]

Is this something you'd want to present on a Thursday tag up?

Good idea! Let's do it.