Update auth documentation

**Feature request**
It would be great to have serialization for components.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_serialization` with default `false`.

Start by locating the configuration entry points and documentation referenced by the auth area; the issue does not name files or tests. Trace how component configuration is currently handled, then determine the expected behavior for the new enable_serialization option and verify its default and production-deployment use case.

Written by the indexing model from the issue text.