[Feature Request]: Add searching function in chat page

### Is there an existing issue for the same feature request?

- [x] I have checked the existing issues.

### Is your feature request related to a problem?

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### Describe the feature you'd like

在聊天页面添加联网搜索功能

### Describe implementation you've considered

_No response_

### Documentation, adoption, use case

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### Additional information

_No response_