* feat: add loading to all pages
* fix: disable sending messages if both application and conversation are empty
* feat: add chatSpin class to Spin of chat
* feat: generate select options for SystemModelSettingModal grouped by type
* feat: add llm icon
* feat: add upgrade button to UserSettingTeam
* feat: replace the icon in the sidebar of the user settings page
* 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