Add mappings for gz.msgs.AirSpeedSensor and gz.msgs.Altimeter

[srmainwaring]

Desired behavior

Provide mappings for sensor data:

• gz.msgs.AirSpeedSensor
• gz.msgs.Altimeter

Alternatives considered

• NA.

Implementation suggestion

The main issue is which ROS message type to target as these messages do not have a corresponding message in sensor_msgs.

Additional context

Would be happy to submit a PR for this feature request once a suitable ROS message type is agree upon.

[azeey]

We've been creating our own ROS messages when a compatible message type is not available in the ROS ecosystem (see https://github.com/gazebosim/ros_gz/tree/ros2/ros_gz_interfaces). Can we do the same here?

[ahcorde]

Feel free to add me as a reviewer @srmainwaring

[adityapande-1995]

Adding Altimeter bridging here : #413.
Note, addin AirSpeedSensor also requires adding SensorNoise msg.

[adityapande-1995]

SensorNoise msg work in progress : #417

[wittenator]

Is there anything missing for the AirSpeedSensor? I would also be very interested in having this data in ROS

[wittenator]

Just for the sake of documentation: It seems that the Air Speed sensor msgs only exists in gz_msgs 9+. Since the current stable version of ros_gz is using Fortress and therefore gz_msgs version 7, there is no message to bridge atm.