feat: display chunk token number when category of knowledge as general and...

feat: display chunk token number when category of knowledge as general and unavailable llm models appear disabled and if the backend returns 401, it will jump to the login page and fixed the issue where the greeting would disappear when clicking on a new dialog (#117)

* feat: Fixed the issue where the greeting would disappear when clicking on a new dialog

* feat: replace favicon with logo.svg

* feat: if the backend returns 401, it will jump to the login page.

* feat: unavailable llm models appear disabled

* feat: display chunk token number when category of knowledge as general