feat(i18n): Add Korean translations and update types

- Added Korean (ko) translations for all modules (incident, login, maintenance, menu, service, settings, ssl)
- Added previously empty strings in `application/src/translations/types`
- Followed existing style and naming conventions

application/src/translations/ko/menu.ts

@@ -0,0 +1,21 @@
+
+import { MenuTranslations } from '../types/menu';
+
+export const menuTranslations: MenuTranslations = {
+  uptimeMonitoring: "가동 시간 모니터링",
+  instanceMonitoring: "인스턴스 모니터링",
+  sslDomain: "SSL & 도메인",
+  scheduleIncident: "일정 및 인시던트",
+  operationalPage: "운영 페이지",
+  reports: "리포트",
+  regionalMonitoring: "지역 모니터링",
+  settingPanel: "설정 패널",
+  generalSettings: "일반 설정",
+  userManagement: "사용자 관리",
+  notificationSettings: "알림 설정",
+  alertsTemplates: "알림 템플릿",
+  rolesManagement: "권한 관리",
+  dataRetention: "데이터 보존",
+  backupSettings: "백업 설정",
+  aboutSystem: "시스템 정보",
+};