Add genre management functionality and update sidebar navigation

app/mod/the-loai/page.tsx

@@ -0,0 +1,13 @@
+import { getServerSession } from "next-auth/next"
+import { authOptions } from "@/lib/auth"
+import { redirect } from "next/navigation"
+import { GenreClient } from "./genre-client"
+
+export default async function ModTheLoaiPage() {
+  const session = await getServerSession(authOptions)
+  if (!session || (session.user.role !== "MOD" && session.user.role !== "ADMIN")) {
+    redirect("/")
+  }
+
+  return <GenreClient />
+}