Boost serialisation support

[ron0studios]

It would be nice to have boost serialisation support in this library.

Quick intro/tutorial to the format here:
https://www.boost.org/doc/libs/latest/libs/serialization/doc/index.html

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It diverts slightly from normal serialisation because of its archive based system of reading/writing - although I think this is still very doable. Boost is also a pretty hefty library.

If possible I'd like to tackle this myself over the following weeks - big fan of the library and would be keen to make a contribution :)

Thanks!

[liuzicheng1987]

@ron0studios , I remember taking a look at this some two years ago. I am open to a PR along these lines.

[ron0studios]

Great, thanks! I'll be working on this over the week and have already been playing around with this idea following the guide in the docs :)

[ron0studios]

resolved by #641