Add programmatic configuation API as alternative of annotation declaration

For example create a **configurable** bean to allow developers to assemble the authentication mechanism by codes instead of annotations.

```java
@ApplicationScoped
class AuthConfiguration {

@Produces
HttpAuthenticationMechanismFactory openIdHttpAuthMechanism() {

}

}
```

Start by reviewing the existing annotation-based authentication mechanism declarations and the example in this issue. Define the required programmatic configuration scope and how it should coexist with annotations; done requires an agreed API design and corresponding implementation, though no files or tests are named in the issue.

Written by the indexing model from the issue text.