Add rate limiting for encryption

**Feature request**
It would be great to have analytics for store.

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

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

The title requests rate limiting for encryption, while the body requests store analytics and an enable_analytics configuration option. No files, tests, or entry points are named; first clarify which feature is intended, then identify the relevant configuration and analytics or encryption entry points. Done should include an agreed scope, default behavior, and tests for the selected feature.

Written by the indexing model from the issue text.