Fixes for Quadrotor/Eyebot model

[frefolli]

src/plugins/simulator/physics_engines/pointmass3d/pointmass3d_quadrotor_model.cpp

Inside this file an assignment for getting desired speed data was missing, I added it.

src/plugins/robots/eye-bot/simulator/pointmass3d_eyebot_model.cpp

The speed actuator for eye-bot wasn't carefully configured: the coefficient weren't enough for it to move the drone by an inch! I've set this parameters to values comparable to the ones of position actuator.

Warnings

This branch contains the renaming of a test workflow file of yours that i masked since I didn't need it for my course's project. So I ask you to incorporate my fixes by hand since they are rather trivial.

[ilpincy]

This looks great, thank you so much for your contribution!