[Idea] Split up HasBinaryUUID trait

[afraca]

The HasBinaryUUID trait is quite 'all in'. It's not so easy to mix how your models work.

If your model A does not have binary uuid, but B has, and you're working with relations, it's nice to have the toArray() from the trait, but I don't want the creating listener code.

[brendt]

There actually were multiple traits in a previous version. We decided to go all in for a better default user experience. For some people this is a good thing, for other it's not.

Furthermore, this would mean a breaking change. I'll tag this issue so that we'll revisit it for a next major version.

[vpratfr]

Note for later. A non breaking way to do that would be to split it in several traits and then the existing trait would use all those smaller pieces.