Include Airspeed in Quad Model

I’d like to include an airspeed reading capability on the Quadcopter model (such that it would also show up on the QGroundControl ‘Sensors’ tab). How should I go about doing this?

Same, here I can’t seem to find out how to add the air speed sensor for a Quadcopter. I think that one possible solution might to to manually add in the sensor by updating the source code for QGC.