Should we move serialisers to the classes (rather than staying in the serialiser file)?

[Cullen-Enerdyne]

One major benefit of this is that we can achieve runtime polymorphism through this approach.

Currently, we can only serialise data according to it's declared type. If we run the serialiser with member methods, we can keep more data as base types (e.g. Primitive*), and they will still be serialised correctly.

[AlexvZyl]

#103

[AlexvZyl]

I think we should move it. Having the serialiser code in different places is akward.

[AlexvZyl]

If we implement an ECS properly, the serialiser might even become one function to handle all entities. It just iterates components and serialises each component.
#446