refactor(all): migrate from React to Next.js

src/app/admin/layout.tsx

@@ -0,0 +1,10 @@
+import type { ReactNode } from "react";
+import AdminLayout from "@/views/AdminLayout";
+
+export default function AdminSectionLayout({
+  children,
+}: {
+  children: ReactNode;
+}) {
+  return <AdminLayout>{children}</AdminLayout>;
+}