RAF Upper Heyford - Update to NB007 package

This update to the NB007 Upper Heyford scenery features a comprehensive rebuild of the airfield and its buildings, including new custom structures and static F-111 and EF-111 aircraft. Period vehicles and animated TAB-V shelters, which respond to user proximity, have been added along with detailed parking options. The package also includes scenery enhancements for the nearby RAF Croughton communications facility and improved surroundings for RAF Upper Heyford. Additionally, scenery tiles cover the base area and remove default parked cars for increased realism.