templates.py: disable C4100 warnings for headers created by this file + move <map> inclusion to .cpp as it's not needed in .h + use spaces instead of tabs consistently for these files as seems to be the convention.

src/ifcparse/Ifc4.cpp

@@ -31,6 +31,8 @@
 #include "../ifcparse/IfcWrite.h"
 #include "../ifcparse/IfcWritableEntity.h"
 
+#include <map>
+
 using namespace Ifc4;
 using namespace IfcParse;
 using namespace IfcWrite;