[Epic] Replace MUI with Tailwind

[HexaField]

Separation of concerns between html and css works fine for documents, not so much for complex web apps. Our current approach leads to bloated stylesheets and is simply not feasible to maintain well at scale. We should consider migrating to tailwind.css

https://adamwathan.me/css-utility-classes-and-separation-of-concerns/

• [x] #8805
• [x] #8808
• [ ] https://github.com/EtherealEngine/etherealengine/issues/8193
• [x] #8806
• [ ] #8807
• [x] #8135

[speigg]

Unless you can import only the css needed, I’d recommend against importing any external css libraries. Importing tons of unused css or fonts can significantly slow down XRUI processes

[HexaField]

we likely need something this for MUI to become feasible https://tailwindcss.com/

[speigg]

we likely need something this for MUI to become feasible https://tailwindcss.com/

No to MUI, but yes to tailwind css

[HexaField]

Renaming this issue to reflect new direction