UPD: automatic change of keyboard mode + O reset velocity (not 0)
- 0 could be confusing to reset the camera velocity since the numbers are used to load ans save the scene, so I chose to use O or o since it's on the main keyboard
- K is not the only key that changes your keyboard mode :
-- if you press Z and you are in QWERTY mode, it goes to AZERTY mode
-- if you press W and you are in AZERTY mode, it goes to QWERTY mode