RAD-93: Update wcs attribute information

[PaulHuwe]

Resolves RAD-93

Closes #181

This PR updates wcs keywords and attribute information

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 95.81%. Comparing base (a32ecf5) to head (7e8db1d).
Report is 29 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #477   +/-   ##
=======================================
  Coverage   95.81%   95.81%           
=======================================
  Files           4        4           
  Lines         215      215           
=======================================
  Hits          206      206           
  Misses          9        9           

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

[kdupriestsci]

How certain are we that this is a complete list? We've only allowed for 2 extra characters. If we think this list might expand in the future we might want to allow for extra characters now.

[schlafly]

We should include at least WFI_CEN, BORESIGHT, and CGI_CEN. There's one other placeholder in the SIAF called WFI_TITLE that I think we can safely ignore.

I think with those additions the list would be complete, and I don't think it's very likely to change so we could stick with the enum? I am also partial to just doing strings with 20 characters to give us more flexibility.

[PaulHuwe]

Keywords added and string length expanded.