FYI 4.0.0-alpha.1 demo with actix-web and Okta

[dskyberg]

For anyone interested, here's a simple demo of a resource server / client using v4.0.0-alpha.1.

My goal is to just demo how to set up Okta for OIDC best practices. I would eventually like the demo to support PAR. If anyone has a PR that support PAR, I'd love to try it.