Koa Cache Control Middleware

The `koa-cache-control` package provides Koa middleware for declarative management of HTTP `Cache-Control` headers. Currently stable at version 2.0.0, it offers a simple API to configure caching behaviors, including `no-cache`, `max-age`, `public`, `private`, and `no-store`. The package helps consolidate common caching patterns, such as automatically setting `max-age=0` when `no-cache` is enabled. While its release cadence has been relatively slow, with its last major update aligning with Koa 2.x, it specifically targets Koa applications, providing a more integrated approach than manually manipulating headers directly. It supports both Koa 1.x (generator-based) and Koa 2.x (async/await based) applications.