* feat: fetch messages add minSeq when message isEnd is true.

* feat: fetch messages add minSeq when message isEnd is true.

* feat: add new contentType markdownText for AI.

* feat: add a field to specify whether to send a notification message when creating a group.

* feat: add a field to specify whether to send a notification message when kick user or invite user.

* feat: add a field to specify whether to send a notification message when kick user or invite user.

* refactor: change sendNotification to sendMessage to avoid ambiguity regarding message sending behavior.

* feat: add rpc function of set user's conversation.