Format file format from Windows/dos to Unix (#1949)

feat: add image for chunk method (#139)

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: remove KnowledgeSearching and add knowledge configuration page and add a run button to the document (#64)

add front end code (#27)