RAD-272: Add dust map column to source catalog table.

[PaulHuwe]

Resolves RAD-272

Closes #871

This PR incorporates v2.0.0 changes and thus supplants #870

This PR adds a new column to the source catalog table containing information about the estimated dust extinction in B-V, taken by default from the map of Schlegel, Finkbeiner, and Davis (1998).

Tasks

• Update or add relevant rad tests.
• Update relevant docstrings and / or docs/ page.
• Does this PR change any schema files?
  • Schema changes were discussed at RAD Review Board meeting.
• 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>").
  • Update relevant roman_datamodels utilities and tests.

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 86.03%. Comparing base (5e16410) to head (276d073).
⚠️ Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #877      +/-   ##
==========================================
- Coverage   86.56%   86.03%   -0.54%     
==========================================
  Files          15       15              
  Lines        1154     1131      -23     
==========================================
- Hits          999      973      -26     
- Misses        155      158       +3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[braingram]

Would you include the "make the column required" changes?
3addce1

[PaulHuwe]

Would you include the "make the column required" changes? 3addce1

Added

[mairanteodoro]

Looks good to me. We should also update the truth files later on.
Thanks, Paul!

[mairanteodoro]

@PaulHuwe Could you add the regression test results to this PR: https://github.com/spacetelescope/RegressionTests/actions/runs/25746150125