add blank material files

valve/pbr/halflife.wad/-LAB3_W6B/-LAB3_W6B.mat

@@ -0,0 +1,24 @@
+
+{
+"for" "-0LAB3_W6B"
+//"basecolor_map" "-0LAB3_W6B.png"
+//"normal_map" "-0LAB3_W6B_normal.png"
+//"metal_map" "-0LAB3_W6B_metal.png"
+//"roughness_map" "-0LAB3_W6B_roughness.png"
+}
+
+{
+"for" "-1LAB3_W6B"
+//"basecolor_map" "-1LAB3_W6B.png"
+//"normal_map" "-1LAB3_W6B_normal.png"
+//"metal_map" "-1LAB3_W6B_metal.png"
+//"roughness_map" "-1LAB3_W6B_roughness.png"
+}
+
+{
+"for" "-2LAB3_W6B"
+//"basecolor_map" "-2LAB3_W6B.png"
+//"normal_map" "-2LAB3_W6B_normal.png"
+//"metal_map" "-2LAB3_W6B_metal.png"
+//"roughness_map" "-2LAB3_W6B_roughness.png"
+}