### What problem does this PR solve?
feat: upload file in FileManager #345
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
… chart will be displayed.
### What problem does this PR solve?
feat: #345 even if the backend data returns empty, the skeleton of the
chart will be displayed.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Embed the chat window into other websites through iframe
#345
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: modify the description of qa
Issue link: #405
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
feat: render stats charts
feat: create api token
feat: delete api token
feat: add ChatApiKeyModal
feat: add RagLineChart
Issue link: #345
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Show original text source in conversation messages
Issue link: #337
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Support Traditional Chinese
Issue link: #335
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
