[feature] Support export all allmonitors

[YxYL6125]

What's changed?

refer: #3507
adding functionality to export all monitors from the system 添加了从系统导出所有监控的功能。

• Added a new inferface /api/monitors/export/all for exporting all monitors 添加新接口导出所有监控
• Added a new export button in the UI for exporting all monitors 添加个新的导出全部monitor按钮
• Added i18n support for both English and Chinese 添加英文和中文的国际化支持
• Added ut for export all 添加UT

Checklist

• I have read the Contributing Guide
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.

Add or update API

• MonitorController：/api/monitors/export/all
• I have added the necessary e2e tests and all cases have passed.

[zqr10159]

You shouldn't remove the json escape symbols, otherwise the interface won't be displayed in English, you can try switching to English first.

[tomsun28]

hi, feature suggest merge after 1.7.2 release.

done