X-Plane HIL proven both ways, data conversion and controls feedback set up correctly, needs actual HIL flights tests now

Pushed HIL with X-plane to being close to operational. Receiving from X-Plane  implemented, sending to it is prepared. Needs an iteration of onboard SW first

Mav icons

Fixed reporting of command execution status

Removed a lot of verbose debug output, added connection indication to main menu bar to improve situational awareness of operator