axum exemple with websockets

[mathroc]

Is your feature request related to a problem? Please describe.

I'm trying to build a small graphql server on top of Axum but can't figure out how to get websockets working with it

Describe the solution you'd like

I'd like an example similar to https://github.com/graphql-rust/juniper/tree/master/examples/warp_subscriptions

Describe alternatives you've considered

async-graphql does have an Axum integration but it does not support implementing dynamic schemas (and they don't plan to)

[btielen]

I am working on it. Got a basic test running locally.