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',

src/i18n/locales/zh-CN.ts

@@ -1867,6 +1867,10 @@ export default {
         home: '系统首页',
         homeTip:'确认要提交当前界面为系统界面吗?',
         homeSet:'系统首页设置',
+        backup: '系统备份',
+        backupInstruction: '系统备份将会对当前系统上运行的网元信息记录及配置文件进行备份，可进行系统的恢复操作！',
+        backupExportTip: '确认要导出系统备份吗?',
+        backupImportTip: '确认要导入系统备份吗?',
       },
       role:{
         allScopeOptions:'全部数据权限',