refactor: 활용도 낮은 필드 순서 정리

Author: Jihyun3478

src/types/models/QRLoginToken.type.ts

@@ -1,9 +1,9 @@
 export interface QRLoginToken {
     token: string;
     user: number;
-    created_at: Date;
-    expires_at: Date;
     is_used: boolean;
     ip_address: string;
     user_agent: string;
-}
+    created_at: Date;
+    expires_at: Date;
+}