feat(appkit): hooks for fetching chat history/messages#389

hubertzub-db wants to merge 6 commits into

databricks:maindatabricks/appkit:mainfrom

hubertzub-db:agent/v2/chatui/3-chat-history-hookhubertzub-db/appkit:agent/v2/chatui/3-chat-history-hookCopy head branch name to clipboard