Little PBR USD test from Mineways with JG-RTX

Description

GIve USD import a try with a small scene from Mineways. Though small, it's got 78 separate textures (I believe Sketchfab has a 100 texture limit). Easily done: export to USD from Mineways, zip up the USDA file and the corresponding material directory, upload ZIP to Sketchfab. Textures are from JG-RTX.