Add Fuel & payload dialog weights
Adjusted engine idling and throttle response behaviour
Added airspeed indicator from @chad3006
Added manifold pressure gauge from @chad3006
Animate retractable cabin entry step
Implement propeller feathering, fix propeller blades animation
Add right yoke, add fuel quantity indicator from @chad3006
Fix aux fuel tanks not showing on the fuel selector
added fuel selectors, menu, autostart function and basic fuel system
Cleanup
