Feature #2830 bootstrap enum

[JohnHalleyGotway]

Note that is a pull request to merge change from the feature_2830_bootstrap_enum branch into the feature_2830_sonarqube_enum branch. @hsoh-u is working on most of the changes, and this PR provides updates to the handling of the BootIntervalType enumeration.

Expected Differences

• [x] Do these changes introduce new tools, command line arguments, or configuration file options? [No]
  If yes, please describe:
  

• [x] Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [No]
  If yes, please describe:
  

Pull Request Testing

• [x] Describe testing already performed for these changes:
  Only confirmed that these changes compile and that make install runs without error.

• [x] Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  Since this was not a PR for the develop branch, the full regression test was NOT RUN via GHA. Instead, I manually triggered the following Testing Workflow run: https://github.com/dtcenter/MET/actions/runs/8397559365

Please check to confirm that it ran without error and flagged no diffs.

• [x] Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [Yes] None needed.

• [x] Do these changes include sufficient testing updates? [Yes] None needed.

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

• [x] Will this PR result in changes to existing METplus Use Cases? [No]
  If yes, create a new Update Truth METplus issue to describe them.

• [x] Please complete this pull request review by [Tues 3/26/24].
  

Pull Request Checklist

See the METplus Workflow for details.

• [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) and Development issue Select: Milestone as the version that will include these changes Select: Coordinated METplus-X.Y Support project for bugfix releases or MET-X.Y.Z Development project for official releases
• [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.
• [ ] Close the linked issue and delete your feature or bugfix branch from GitHub.

[JohnHalleyGotway]

Since this testing workflow run flagged no diffs, I'm proceeding with the merge.