Theme switch support (#3568)

fix: if the conversation name is too long, it will overflow the current item. #607 (#972)

fix: disable sending messages if both application and conversation are empty and add loading to all pages (#134)

feat: Add Skeleton to MessageItem before the backend returns a message and fixed the issue where ChatConfigurationModal displays old data when creating a new dialog (#99)

feat: fixed the issue where chat greetings could not appear (#95)

feat: fetch conversation and delete chat dialog (#69)

feat: create a chat assistant and extract SimilaritySlider (#67)

feat: add temperature and top-p to ModelSetting and add ChatConfigurationModal and bind backend data to KnowledgeCard (#65)