Render SelectFields as MUI Selects

[CommandMC]

This renders most drop-down selection prompts inside Heroic. In turn, these dropdowns now work inside the Gamescope session.

Current issues:

• Controller navigation does not work, hitting "Down" opens the dropdown, with no way to navigate further down to other components
• There is a black box in the top-left of the component, where the label should be
• The dropdowns do not work while in a Dialog (they're rendered behind the Dialog)

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)