feat: 优化项目目录结构

apps/frontend/lib/api/admin/user/get.ts

@@ -0,0 +1,6 @@
+import { User } from "@/lib/types/user";
+import fetcher from "../../fetcher";
+
+export function get(userId: string) {
+    return fetcher<User>(`/api/admin/user/${userId}`);
+}