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

packages/features/auth/src/components/auth-provider-button.tsx

@@ -12,7 +12,7 @@ export function AuthProviderButton({
 }>) {
   return (
     <Button
-      className={'flex w-full space-x-2 text-center'}
+      className={'flex w-full gap-x-3 text-center'}
       data-provider={providerId}
       data-test={'auth-provider-button'}
       variant={'outline'}