SITL changes and rover control update

[haitomatic]

• reconfigure many gz airfames (tested ssrc mc, ssrc rover, default vtol, default fixed wing)
• adapt docker compose start-up style from https://github.com/tiiuae/gazebo-sim-sandbox . Lead to change in rc simulator and new files for px4 sitl build with gz sim support
• new rover position control logic from current main
• gz-bridge: adapt with new rover position control logic change
• sensor-gps-sim: reduce gaussian noise level as UGV sim shows high variation in local pos estimation