Add TypeScript types for handlers

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

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

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

The issue names no files, tests, or entry points, and its TypeScript title conflicts with the request for controller compression. First clarify the intended scope and locate the controller configuration entry point; done should include the `enable_compression` option with a default of `false` and coverage for the resulting behavior.

Written by the indexing model from the issue text.