feat: save the selected parser to the backend on the upload file page and upload document (#54)

feat: modify routing to nested mode and rename document (#52)

feat: Modify the color of the svg icon in the header according to the selected state and feat: extract routing information from the knowledge base into constants (#51)

feat: layout the knowledge list page and modify the page switching button in the header (#48)

feat: remove loading from model and use DvaModel instead of redundant types such as kAModelType (#47)

feat: prevent the user from entering the knowledge base if he is not logged in (#45)

feat: install prettier to format code and add react-dev-inspector to locate code in the IDE faster (#44)

set port (#39)

update api (#38)

update port (#36)

update knowledge_kb (#34)

add front end code (#27)