Introducing new HTTP API capabilities in Livebook 0.13

The blog post announces the release of Livebook 0.13, featuring new functionalities and improvements. One significant addition is the Kino.Proxy feature, which lets users expose API endpoints directly from their Livebook notebooks or apps. The post provides examples and code snippets demonstrating how to use Kino.Proxy to create and manage API endpoints. It shows how to set up a simple 'hello world' API and leverage Plug.Router for handling multiple endpoints. Additionally, it illustrates a practical use case where a Livebook app tracks the state of a GitHub repository using webhook data. The article wraps up by encouraging users to explore the possibilities provided by this new feature and to check the changelog for more updates.