feat: added button styling and updated login layout

src/components/user/logout-button.tsx

@@ -0,0 +1,15 @@
+import { signOut } from '@/auth';
+import Button from '../Button';
+
+export function Logout() {
+  return (
+    <form
+      action={async () => {
+        'use server';
+        await signOut();
+      }}
+    >
+      <Button type='submit'>Sign Out</Button>
+    </form>
+  );
+}