add blank material files

cstrike/pbr/models/support3.mdl/support3.mdl.mat

@@ -0,0 +1,16 @@
+
+{
+"for" "#models/support3/mtlglue.mdl"
+//"basecolor_map" "mtlglue.png"
+//"normal_map" "mtlglue_normal.png"
+//"metal_map" "mtlglue_metal.png"
+//"roughness_map" "mtlglue_roughness.png"
+}
+
+{
+"for" "#models/support3/mtlt16b.mdl"
+//"basecolor_map" "mtlt16b.png"
+//"normal_map" "mtlt16b_normal.png"
+//"metal_map" "mtlt16b_metal.png"
+//"roughness_map" "mtlt16b_roughness.png"
+}