Land of Sands - 1st update

Changelog:

-More vegetation added in "Town" spawn point.
-New Airport near "Town" and "Gas Station's Parking Lot" spawnpoints.
-New Remote Town place & spawnpoint (you can call it Rural town if you want), More remote towns will be added in the future for long drive explorations.
-Height level of some roads.
-Far west side of the highway is now looped instead of being continued.
-Another set of off-road tracks going 100+ km (located on far east from all Points of Interest)