Actix 4 compatible JWT authentication

In order to make use of this crate, you can add it to your Cargo.toml

This crate is build with actix-4.

actix-4-jwt-auth = "1.0.0"

Or when you like to use the latest as found on github:

actix-4-jwt-auth = {git = "https://github.com/spectare/actix-4-jwt-auth", branch = "main"}

Works with extractors

```rust #[derive(Debug, PartialEq, Clone, Serialize, Deserialize)] pub struct FoundClaims { pub iss: String, pub sub: String, pub aud: String, pub name: String, pub email: Option, pub email_verified: Option, }

#[get("/authenticated_user")]
async fn authenticated_user(user: AuthenticatedUser<FoundClaims>) -> String {
    format!("Welcome {}!", user.claims.name)
}

```

Is a Actix endpoint URL that extracts the AuthenticatedUser from the JWT based Authorization Bearer header.

You can wire your application like

```rust let authority = "https://a.valid.openid-connect.idp/".to_string();

  let oidc = Oidc::new(OidcConfig::Issuer(authority.clone().into())).await.unwrap();

  let biscuit_validator = OidcBiscuitValidator { options: ValidationOptions {
          issuer: Validation::Validate(authority),
          ..ValidationOptions::default()
      }
  };

  HttpServer::new(move || {
    App::new()
            .app_data(oidc.clone())
            .wrap(biscuit_validator.clone())
            // .wrap(OidcBiscuitValidator::default()) //without issuer verification
            .service(authenticated_user),
    })
  .bind("0.0.0.0:8080".to_string())?
  .run()
  .await

```