component/qjs-wrapper: become autopilot's API independent
- Update 
qjs-wrapperto use Mavlink v2 messages - Split 
qjs-wrapperand autopilot's related (like MavSDK) code - Generate MavSDK headers on the fly from Mavlink messages xml descriptor
 - Add a front-end communicating though a websocket for subscribers
 - Run the user script as a Slapos service