add missing file for windows

src/config.h

@@ -0,0 +1,22 @@
+/*
+* Copyright (c), Recep Aslantas.
+*
+* MIT License (MIT), http://opensource.org/licenses/MIT
+* Full license can be found in the LICENSE file
+*/
+
+#ifndef cglm__config__h_
+#define cglm__config__h_
+
+#if defined(_WIN32) || defined(WIN32)
+
+/* Exclude rarely-used stuff from Windows headers */
+#  define WIN32_LEAN_AND_MEAN 
+#  include <SDKDDKVer.h>
+
+/* Windows Header Files: */
+#  include <windows.h>
+
+#endif
+
+#endif /* cglm__config__h_ */