feat: some changes and admin

nextjs/src/app/admin/(dashboard)/players/page.tsx

@@ -0,0 +1,8 @@
+import { requireAdmin } from '@/lib/auth/requireAdmin';
+
+import { PlayersAdminClient } from './PlayersAdminClient';
+
+export default async function AdminPlayersPage() {
+  await requireAdmin();
+  return <PlayersAdminClient />;
+}