add blank material files

valve/pbr/halflife.wad/-LAB3_FLR1/-LAB3_FLR1.mat

@@ -0,0 +1,24 @@
+
+{
+"for" "-0LAB3_FLR1"
+//"basecolor_map" "-0LAB3_FLR1.png"
+//"normal_map" "-0LAB3_FLR1_normal.png"
+//"metal_map" "-0LAB3_FLR1_metal.png"
+//"roughness_map" "-0LAB3_FLR1_roughness.png"
+}
+
+{
+"for" "-1LAB3_FLR1"
+//"basecolor_map" "-1LAB3_FLR1.png"
+//"normal_map" "-1LAB3_FLR1_normal.png"
+//"metal_map" "-1LAB3_FLR1_metal.png"
+//"roughness_map" "-1LAB3_FLR1_roughness.png"
+}
+
+{
+"for" "-2LAB3_FLR1"
+//"basecolor_map" "-2LAB3_FLR1.png"
+//"normal_map" "-2LAB3_FLR1_normal.png"
+//"metal_map" "-2LAB3_FLR1_metal.png"
+//"roughness_map" "-2LAB3_FLR1_roughness.png"
+}