Provide support for injecting Identity bean for web socket-based services

A typical websocket-based application may use a combination of REST and websocket endpoints, with the following security config for setting the identity state:

builder
.identity()
.stateless()

Unfortunately there is no such thing as request scope for a websockets message handler method, so attempting to inject the Identity bean results in the following exception:

org.jboss.weld.context.ContextNotActiveException: WELD-001303: No active contexts for scope type javax.enterprise.context.RequestScoped