Create NJsonSchema.Attributes package

[trejjam]

Hi,
are you open to extracting NJsonSchema/Attributes into a standalone package?

My motivation is that these attributes are used on the Domain/Contract level and most of your solution depends on these. That is fine by itself, but NJsonSchema has its dependencies like Newtonsoft.Json which we would like to push out of our codebase.

I know that Newtonsoft is heavily used in the library and I am not asking to remove it :) I am ok to use it in places where it makes sense.

If you are open to it, I can prepare a PR for it

[RicoSuter]

I think that's a good idea, NSwag also has this with the NSwag.Annotations package so maybe we should also call it NJsonSchema.Annotations

[RicoSuter]

v11.0.0-preview006