Idaho-S81 Indian Creek USFS (cleanup/fix)

This add-on provides a minor fix for the Indian Creek USFS airstrip (ICAO S81) in Microsoft Flight Simulator. It addresses an issue with a satellite image of an aircraft on the runway while retaining the runways overall appearance. Two windsocks are included, requiring an additional library for visibility; however, the library is not necessary for those who do not wish to see the windsocks.