Support UUID serialization

[Amertz08]

Seems at least imo UUID serialization should be supported out of the box.

[hugovk]

Thanks for the report. Please could you give an example code snippet of what you're expecting? And is this available with the stdlib json? If not, I think it's unlikely to be added.

[Amertz08]

Hadn't thought to check the builtin json lib. Looks like it's not supported.

As far as code snippet.

>>> ujson.dumps({"key": UUID("abc...")}
'{"key": "abc..."}'

[bauman]

consider migrating your codebase to use orjson for uuid support instead of ujson?

https://github.com/ijl/orjson