UNCC SMH Round #7 submission

[lunarmouse]

Description

Add round #7 submission file.
Update metadata file to reflect most recent submission.

If this section does not apply to you, please delete it in your PR

If this is a new team submission, please include the following details :-

• Team name:
• Model Name:
• Institution:

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If this section does not apply to you, please delete it in your PR

If you are adding new scenarios to an existing model, please include the following details:-

• Team name: UNCC
• Model name that is being updated: UNCC-hierbin

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Checklist

• Specify a proper PR title with your team name.
• All validation checks ran successfully on your branch. Instructions to run the tests locally is present here.