Tailwind CSS 4 Migration (#100)

* Updated to TailwindCSS v4
* Moved CSS module to its own CSS file because of lightingcss strict validation
* Respect next parameter in middleware
* Updated all packages. 
* Split CSSs for better organization.
* Redesigned theme and auth pages
* Improved pill and header design
* Formatted files using Prettier
* Better footer layout
* Better auth layout
* Bump version of the repository to 2.0.0

apps/web/app/(marketing)/faq/page.tsx

@@ -135,7 +135,7 @@ function FaqItem({
         </div>
       </summary>
 
-      <div className={'flex flex-col space-y-2 py-1 text-muted-foreground'}>
+      <div className={'text-muted-foreground flex flex-col gap-y-3 py-1'}>
         <Trans i18nKey={item.answer} defaults={item.answer} />
       </div>
     </details>