[RFC]: investigate migrating from Material-UI v4 to Mui v5

[kgryte]

Description

This RFC proposes investigating migration from Material-UI v4 to Mui v5. See migration guide.

Based on an initial skim, this should not be too difficult, as we mostly use fairly vanilla Material UI elements, such as buttons and icons.

Related Issues

No.

Questions

No.

Other

No.

Checklist

• [X] I have read and understood the Code of Conduct.
• [X] Searched for existing issues and pull requests.
• [X] The issue name begins with RFC:.

[Planeshifter]

Pull request with migration has been filed.