Update METplus use case to use madis2nc wrapper when it is available

[georgemccabe]

The madis2nc wrapper has not yet been created (issue dtcenter/METplus#1514). The METplus use case (#48) can still call the madis2nc MET tool by using the UserScript wrapper.

Describe the Task

When the madis2nc wrapper is available, update the METplus use case to call the wrapper instead of UserScript.

Time Estimate

~1 day

Sub-Issues

Consider breaking the task down into sub-issues.

• [X] Add a checkbox for each sub-issue here.

Relevant Deadlines

I-WRF 1.0.0 (not required for 0.1.0)

Funding Source

I-WRF 7790013

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Task Checklist

• [X] Complete the issue definition above, including the Time Estimate and Funding Source.
• [ ] Fork this repository or create a branch of develop. Branch name: feature_<Issue Number>_<Description>
• [ ] Complete the development and test your changes.
• [ ] Add/update log messages for easier debugging.
• [ ] Add/update unit tests.
• [ ] Add/update documentation.
• [ ] Push local changes to GitHub.
• [ ] Submit a pull request to merge into develop. Pull request: feature <Issue Number> <Description>
• [ ] Define the pull request metadata, as permissions allow. Select: Reviewer(s) and Development issues Select: Repository level development cycle Project for the next official release Select: Milestone as the next official version
• [ ] Iterate until the reviewer(s) accept and merge your changes.
• [ ] Delete your fork or branch.
• [ ] Close this issue.