重构了translator，写了点数据库、后端api路由

src/lib/actions.ts

@@ -0,0 +1,11 @@
+"use server";
+
+import { UserController } from "./db";
+
+export async function loginAction(formData: FormData) {
+  const username = formData.get("username")?.toString();
+  const password = formData.get("password")?.toString();
+  
+  
+  if (username && password) await UserController.createUser(username, password);
+}