set Current User Info
Sets the current user's information. If the developer has not implemented a user information provider and instead uses message-attached user information, this method must be used to set the current user's information. After calling init, invoke getInstance.setMessageAttachedUserInfo(boolean) to attach the current user's information to each message. IMKit will extract the user information when receiving the message and refresh it on the UI.
Parameters
user Info
The current user's information.