FlightGear TF-R1

FlightGear model of TF-R1 UAV service rover based on the Jeep model, see the original readme. The main differences are:

• Aerotow hitch moved backward to improve towing capability

fgfs --aircraft=TF-R1 --disable-terrasync --disable-random-objects --disable-real-weather-fetch --allow-nasal-read=/usr/share/games/flightgear/Aircraft/TF-G1/Models/Liveries --timeofday=noon