[main_prop] Preliminary control loop on position (WIP)
* Reset PID on position change + update gx,gy,gtheta
[main_ai;debug_bridge;main_prop] Fixes position reception + several fixes
* Disable fixed beacons
* Uses usb2uart instead of bluetooth
* Adds control of fixed position
* Adds friction to backlash
* Disables backlash compensation
* Fixes relative project location
Merge branch 'dev_coupe' of https://github.com/ENAC-Robotique/Robots into dev_coupe

Conflicts:
	primary_robot/main_ai/obj_tools/obj_types.h