README should mention package is deprecated

[VichoReyes]

According to #22 gql-next is deprecated in favor of gql v3. The readme should also mention that to avoid confusion.

[Cito]

My comment in #22 was a bit misleading, so I removed it. The name "gql-next" has nothing to do with GraphQL-core-next (as GraphQL-core v3 was called earlier). It was rather a very interesting, type-safe, alternative approach for creating a Python GraphQL client, very different from the original gql implementation. The name "gql-next" was chosen because it was meant to eventually/potentially replace gql. However, since then no further work happened in this project, while gql was actively maintained and further developed and is now based on GraphQL-core 3.

This project should be considered more like an experiment and an invitation to continue development and experimentation in this direction. I agree this should be reflected in the README and the name and title should be changed. It's not good to have two projects with the exact same title. But I would want to leave this to the creator of this project @ekampf.

[ekampf]

I agree!
Added deprecation notice to the README

[Fraggle]

@ekampf I was particulary interested by the ability to generate the types via the cli. I can't figure out another client providing this feature for python. Do you have a suggestion ?