feat: 添加系统备份功能，包括导入导出OMC的API和界面支持

src/i18n/locales/en-US.ts

@@ -1867,6 +1867,10 @@ export default {
         home: 'Home Page',
         homeTip:'Do you want to submit the current interface as the system interface?',
         homeSet:'Home Page Settings',
+        backup: 'System Backup',
+        backupInstruction: 'System backup will back up the net element information records and configuration files running on the current system, and can restore the system to the previous state!',
+        backupExportTip: 'Confirm to export system backup?',
+        backupImportTip: 'Confirm to import system backup?',
       },
       role:{
         allScopeOptions:'All data permissions',