feat: eslint 적용 및 관련 코드 일괄 수정

app/gateway-frontend/src/env.d.ts

@@ -1,7 +1,7 @@
 /// <reference types="vite/client" />
 
 declare module '*.vue' {
-  import type { DefineComponent } from 'vue'
-  const component: DefineComponent<{}, {}, any>
-  export default component
+    import type { DefineComponent } from 'vue';
+    const component: DefineComponent<{}, {}, any>;
+    export default component;
 }