add blank material files

valve/pbr/halflife.wad/-C1A4_POW/-C1A4_POW.mat

@@ -0,0 +1,24 @@
+
+{
+"for" "-0C1A4_POW"
+//"basecolor_map" "-0C1A4_POW.png"
+//"normal_map" "-0C1A4_POW_normal.png"
+//"metal_map" "-0C1A4_POW_metal.png"
+//"roughness_map" "-0C1A4_POW_roughness.png"
+}
+
+{
+"for" "-1C1A4_POW"
+//"basecolor_map" "-1C1A4_POW.png"
+//"normal_map" "-1C1A4_POW_normal.png"
+//"metal_map" "-1C1A4_POW_metal.png"
+//"roughness_map" "-1C1A4_POW_roughness.png"
+}
+
+{
+"for" "-2C1A4_POW"
+//"basecolor_map" "-2C1A4_POW.png"
+//"normal_map" "-2C1A4_POW_normal.png"
+//"metal_map" "-2C1A4_POW_metal.png"
+//"roughness_map" "-2C1A4_POW_roughness.png"
+}