Add implementation-specific data propagation field in InferencePool #1674
Description
What would you like to be added:
I'd like to suggest to have a generic field like [map[string]string] inside InferencePoolSpec or even inside Status, similar to what we have in GatewayInstrastrucure for Gateway API: https://github.com/kubernetes-sigs/gateway-api/blob/530c1ee46e0d851d369810e4500f0339c40d8aa1/apis/v1/gateway_types.go#L1022
Why is this needed:
This can be used to propagate implementation specific metadata, instead of using annotations. This way the information that is moved can be part of the API and have clear status.