TabMessageType
TabMessageType: "editorfn_content" | "excmd_content" | "controller_content" | "commandline_content" | "finding_content" | "omniscient_content" | "commandline_cmd" | "commandline_frame" | "state" | "lock" | "alive" | "tab_changes" | "stop_buffering_page_keys" | "commandline_frame_ready_to_receive_messages"
Register a listener to be called for each message with type