Automatic authentication for incoming HTTP request

[NaveenB2004]

When it comes to endpoint authentication, every endpoint that expects the authorization header should implement a method to authenticate the incoming HTTP request (most of the time, redirected to another authentication method by hardcoding every time). If we can implement an annotation like @EndpointAuthenticator (recommended) or something to mark a single method as an authenticated implementation, it will be easy to redirect target authentications with the annotation io.github.lycoriscafe.nexus.http.core.headers.auth.Authenticated.