feat: add loading to ChatContainer and set font family to inter and add tooltip to Form.Item and download documents on the document list page (#136)

feat: set initial state of auth to null (#108)

feat: call useLoginWithGithub in useAuth (#107)

feat: login with github and if it is not a pdf file, set the width of chunkContainer to 100% (#106)

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