libstd-msgs-dev 0.5.11-1 (amd64 binary) in ubuntu bionic

 This package is part of Robot OS (ROS). It contains development C++
 headers for the ROS std_msgs library. This library provides wrappers
 for ROS primitive types, which are documented in the msg
 specification. It also contains the Empty type, which is useful for
 sending an empty signal.