add blank material files

gearbox/pbr/models/w_accelerator.mdl/w_accelerator.mdl.mat

@@ -0,0 +1,16 @@
+
+{
+"for" "#models/w_accelerator/Chrome(red).mdl"
+//"basecolor_map" "Chrome(red).png"
+//"normal_map" "Chrome(red)_normal.png"
+//"metal_map" "Chrome(red)_metal.png"
+//"roughness_map" "Chrome(red)_roughness.png"
+}
+
+{
+"for" "#models/w_accelerator/skull.mdl"
+//"basecolor_map" "skull.png"
+//"normal_map" "skull_normal.png"
+//"metal_map" "skull_metal.png"
+//"roughness_map" "skull_roughness.png"
+}