UI - Allow for re-ordering of the screens

[UberMeatShield]

• Requires that we can feed in the screens and potentially re-name them on disk (annoying)
• At the very least we should be able to order them in the UI (drag and drop?)
• This task first requires the ability to pass the list of screens to make the webp or it doesn't make any sense (or sensible ordering renames should be enough potentially)