Support Gateway API ListenerSet

[kahirokunn]

Describe the feature you are requesting

Would you consider adding support for Gateway API ListenerSet in aws-load-balancer-controller? The specification is described in GEP-1713.

Motivation

• Enables multi-tenant environments to manage listeners, hostnames, and routes independently on a shared load balancer.
• Improves delegation and governance by allowing configuration to be distributed per Namespace rather than centralized in a single Gateway.

Describe the proposed solution you'd like

aws-load-balancer-controller should recognize ListenerSet and allow it to be used together with Gateway, so that teams can attach their own listeners and routes in a standardized way.

Describe alternatives you've considered

• Centralized management of all listeners in the parent Gateway.

Contribution Intention (Optional)

• Yes, I am willing to contribute a PR to implement this feature
• No, I cannot work on a PR at this time

[kellyyan]

Hi, thanks for reaching out. We'll take this into consideration.

[kahirokunn]

Thank you 🙏