Allow for GatewayRoutes to support setting dualstack annotation

[thameezb]

What would you like to be added:
Similar to ingress and service annotations which specify that AAAA and A records should be created for Dualstack resources, the same feature needs to be available for GatewayRoutes (as in the Gateway API world, a *Route can refers to a Gateway which could be single or dual stack)

Why is this needed:
At the moment for Dualstack gateways, only an A record is created for *Route resources. This breaks compatibility with Ingress migration

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/lifecycle stale

[thameezb]

/remove-lifecycle stale