add blank material files

valve/pbr/halflife.wad/-[C1A0DR]/-[C1A0DR].mat

@@ -0,0 +1,16 @@
+
+{
+"for" "C1A0DR1"
+//"basecolor_map" "C1A0DR1.png"
+//"normal_map" "C1A0DR1_normal.png"
+//"metal_map" "C1A0DR1_metal.png"
+//"roughness_map" "C1A0DR1_roughness.png"
+}
+
+{
+"for" "C1A0DR2"
+//"basecolor_map" "C1A0DR2.png"
+//"normal_map" "C1A0DR2_normal.png"
+//"metal_map" "C1A0DR2_metal.png"
+//"roughness_map" "C1A0DR2_roughness.png"
+}