Feature #1989: Add OMI use case

[malloryprow]

Pull Request Testing

• [x] Describe testing already performed for these changes:
  

• The feature branch was tested through CI GitHub Actions (https://github.com/dtcenter/METplus/actions/runs/7252874897).

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

• Review documentation changes

• Review new use case

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

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

• [x] Will this PR result in changes to the test suite? Yes, I think since it is a new use case
  If yes, describe the new output and/or changes to the existing output:
  

• [x] Please complete this pull request review by 03/12/2024.
  

Pull Request Checklist

See the METplus Workflow for details.

• [x] Add any new Python packages to the METplus Components Python Requirements table.
• [x] Review the source issue metadata (required labels, projects, and milestone).
• [x] Complete the PR definition above.
• [x] Ensure the PR title matches the feature or bugfix branch name.
• [x] Define the PR metadata, as permissions allow. Select: Reviewer(s) Select: Organization level software support Project or Repository level development cycle Project Select: Milestone as the version that will include these changes
• [x] After submitting the PR, select the :gear: icon in the Development section of the right hand sidebar. Search for the issue that this PR will close and select it, if it is not already selected.
• [x] After the PR is approved, merge your changes. If permissions do not allow this, request that the reviewer do the merge.
• [x] Close the linked issue and delete your feature or bugfix branch from GitHub.

[coveralls]

Pull Request Test Coverage Report for Build 7265358961

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 90.76%

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Totals
Change from base Build 7211582649:	0.0%
Covered Lines:	8506
Relevant Lines:	9372

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💛 - Coveralls

[malloryprow]

I think the automatic testing failed because there hadn't been a test previously for this use case https://github.com/dtcenter/METplus/actions/runs/7261857794/job/19783956933?pr=2457