Support reading .obj from ZStd compressed format.

experimental/premake4.lua

@@ -3,6 +3,11 @@ newoption {
    description = "Build with zlib."
 }
 
+newoption {
+   trigger     = "with-zstd",
+   description = "Build with ZStandard compression."
+}
+
 solution "objview"
 	-- location ( "build" )
 	configurations { "Release", "Debug" }
@@ -23,6 +28,11 @@ solution "objview"
 		links { 'z' }
 	end	
 
+	if _OPTIONS['with-zstd'] then
+		defines { 'ENABLE_ZSTD' }
+		links { 'zstd' }
+	end	
+
 	-- Uncomment if you want address sanitizer(gcc/clang only)
 	--buildoptions { "-fsanitize=address" }
 	--linkoptions { "-fsanitize=address" }