Feature #3274 TCRMW wind variables

[georgemccabe]

As part of this work, I refactored the TC wrappers to create a TCBaseWrapper to store functionality that is common to more than one TC-related wrapper.

Pull Request Testing

• Describe testing already performed for these changes:
  

Added unit tests that demonstrate the new functionality

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

Review code changes, ensure all tests pass

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [Yes]

• Do these changes include sufficient testing updates? [Yes]

• Will this PR result in changes to the test suite? [No]
  
  If yes, describe the new output and/or changes to the existing output:
  

• Do these changes introduce new SonarQube findings? [No]
  
  If yes, please describe:

• Please complete this pull request review by 5/6/2026.
  

Pull Request Checklist

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• Add any new Python packages to the METplus Components Python Requirements table.
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• Review the source issue metadata (required labels, projects, and milestone).
• Complete the PR definition above.
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[coveralls]

Coverage Report for CI Build 25384928765

Coverage decreased (-0.06%) to 92.065%

Details

• Coverage decreased (-0.06%) from the base build.
• Patch coverage: 4 uncovered changes across 1 file (46 of 50 lines covered, 92.0%).
• 9 coverage regressions across 1 file.

Uncovered Changes

File	Changed	Covered	%
metplus/wrappers/tc_base_wrapper.py	41	37	90.24%

Coverage Regressions

9 previously-covered lines in 1 file lost coverage.

File	Lines Losing Coverage	Coverage
metplus/wrappers/tc_diag_wrapper.py	9	84.42%

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Coverage Stats

Relevant Lines:	10473
Covered Lines:	9642
Line Coverage:	92.07%
Coverage Strength:	1.84 hits per line

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💛 - Coveralls