add blank material files

valve/pbr/halflife.wad/-C2A4_W1/-C2A4_W1.mat

@@ -0,0 +1,24 @@
+
+{
+"for" "-0C2A4_W1"
+//"basecolor_map" "-0C2A4_W1.png"
+//"normal_map" "-0C2A4_W1_normal.png"
+//"metal_map" "-0C2A4_W1_metal.png"
+//"roughness_map" "-0C2A4_W1_roughness.png"
+}
+
+{
+"for" "-1C2A4_W1"
+//"basecolor_map" "-1C2A4_W1.png"
+//"normal_map" "-1C2A4_W1_normal.png"
+//"metal_map" "-1C2A4_W1_metal.png"
+//"roughness_map" "-1C2A4_W1_roughness.png"
+}
+
+{
+"for" "-2C2A4_W1"
+//"basecolor_map" "-2C2A4_W1.png"
+//"normal_map" "-2C2A4_W1_normal.png"
+//"metal_map" "-2C2A4_W1_metal.png"
+//"roughness_map" "-2C2A4_W1_roughness.png"
+}