[Backend] Implement Cockpit's joystick mapping

[joaoantoniocardoso]

Depends on: bluerobotics/cockpit#1962

[joaoantoniocardoso]

Implementation reference: https://github.com/rafaellehmkuhl/MockBlueOsExtension/blob/913eb0a978159bdb2c4e4b610044f1c8082755ab/src/backend/main.py