:heavy_minus_sign: Remove TailwindCSS

[linkdd]

Scope

webui

Desired Behavior

The UI code mixes React MUI and TailwindCSS, creating various discrepancies that are hard to debug and fix.

Removing TailwindCSS and migrating towards React MUI and custom React MUI styles should solve many of those issues, reduce the number of dependencies, speed up build time, and simplify the overall code architecture.