Add support for Gateway API

[akyriako]

https://kubernetes.io/blog/2025/11/11/ingress-nginx-retirement/

To prioritize the safety and security of the ecosystem, Kubernetes SIG Network and the Security Response Committee are announcing the upcoming retirement of Ingress NGINX. Best-effort maintenance will continue until March 2026. Afterward, there will be no further releases, no bugfixes, and no updates to resolve any security vulnerabilities that may be discovered. Existing deployments of Ingress NGINX will continue to function and installation artifacts will remain available.

We recommend migrating to one of the many alternatives. Consider migrating to Gateway API, the modern replacement for Ingress. If you must continue using Ingress, many alternative Ingress controllers are listed in the Kubernetes documentation. Continue reading for further information about the history and current state of Ingress NGINX, as well as next steps.