Traffic Policy support for the Kubernetes Gateway API

The Kubernetes Gateway API has been extended with the addition of a new Traffic Policy Module, allowing users to manage traffic to their applications and APIs more easily. The module includes support for all traffic policy actions using a new Policy CRD, which is powered by ngrok's traffic policy engine. This allows users to create complex policies with minimal effort, using features such as custom responses, JWT validation, and more. The Gateway API also provides extension points that enable configuration in the same places where the rest of the configuration for a resource lives, making it easier to manage and understand. The new Traffic Policy Module is designed to simplify managing traffic to applications and APIs, and can be used with existing modules or ingress controllers.