Separate NAZARA_API into multiple defines (one per module)

To fix inter-module dependency


Former-commit-id: 64704f020e0af22e529d38527323ba977187d4d0

include/Nazara/Utility/AbstractImage.hpp

@@ -11,9 +11,10 @@
 #include <Nazara/Math/Box.hpp>
 #include <Nazara/Math/Rect.hpp>
 #include <Nazara/Math/Vector3.hpp>
+#include <Nazara/Utility/Config.hpp>
 #include <Nazara/Utility/Enums.hpp>
 
-class NAZARA_API NzAbstractImage
+class NAZARA_UTILITY_API NzAbstractImage
 {
 	public:
 		NzAbstractImage() = default;