Add TypeScript types for validation

**Feature request**
It would be great to have sorting for controllers.

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

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

The title and body describe different work: TypeScript validation types versus controller sorting through enable_sorting. Start by confirming which request is intended, then locate the controller and configuration entry points; define the expected sorting behavior and validation coverage before implementation.

Written by the indexing model from the issue text.