### What problem does this PR solve?
- [x] New Feature (non-breaking change which adds functionality)
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Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>
Co-authored-by: Jin Hai <haijin.chn@gmail.com>
* feat: download documents on the document list page
* feat: add tooltip to Form.Item
* feat: set font family to inter
* feat: add loading to ChatContainer
* feat: Modify the color of the svg icon in the header according to the selected state
* feat: add translation icon to header
* feat: shorten the route length of the knowledge base
* feat: extract routing information from the knowledge base into constants