add blank material files

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

@@ -0,0 +1,24 @@
+
+{
+"for" "-0BASEBLUE"
+//"basecolor_map" "-0BASEBLUE.png"
+//"normal_map" "-0BASEBLUE_normal.png"
+//"metal_map" "-0BASEBLUE_metal.png"
+//"roughness_map" "-0BASEBLUE_roughness.png"
+}
+
+{
+"for" "-1BASEBLUE"
+//"basecolor_map" "-1BASEBLUE.png"
+//"normal_map" "-1BASEBLUE_normal.png"
+//"metal_map" "-1BASEBLUE_metal.png"
+//"roughness_map" "-1BASEBLUE_roughness.png"
+}
+
+{
+"for" "-2BASEBLUE"
+//"basecolor_map" "-2BASEBLUE.png"
+//"normal_map" "-2BASEBLUE_normal.png"
+//"metal_map" "-2BASEBLUE_metal.png"
+//"roughness_map" "-2BASEBLUE_roughness.png"
+}