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/auth/layout.tsx

@@ -1,16 +1,9 @@
 import { AuthLayoutShell } from '@kit/auth/shared';
 
 import { AppLogo } from '~/components/app-logo';
-import { BackgroundHue } from '~/components/background-hue';
 
 function AuthLayout({ children }: React.PropsWithChildren) {
-  return (
-    <AuthLayoutShell Logo={AppLogo}>
-      {children}
-
-      <BackgroundHue />
-    </AuthLayoutShell>
-  );
+  return <AuthLayoutShell Logo={AppLogo}>{children}</AuthLayoutShell>;
 }
 
 export default AuthLayout;