RJSK Akita Airport Terrain fix

This add-on addresses the terrain issues at Scherzo002s RJSK Akita Airport by correcting the undulating runway and taxiway surfaces. Due to the lack of a detailed Digital Elevation Model (DEM) for the area, this fix aims to enhance the realism of the airports terrain representation. Users are advised to adjust folder names or priority settings to ensure compatibility with the original airport scenery.