fix(build): Use qualified include path for wwmath.h in BaseType.h

BaseType.h is in Core/Libraries/Include/Lib/ which does not have WWMath/ in its
include search path for all targets (e.g. core_particleeditor). Use
'WWMath/wwmath.h' instead of bare 'wwmath.h' to resolve via the
Libraries/Source/WWVegas parent directory already present in all targets.

Author: Okladnoj

Core/Libraries/Include/Lib/BaseType.h

@@ -30,7 +30,7 @@
 #pragma once
 
 #include "Lib/BaseTypeCore.h"
-#include "WWMath/wwmath.h"
+#include "wwmath.h"
 
 //-----------------------------------------------------------------------------
 typedef wchar_t WideChar;  ///< multi-byte character representations