Feature: Support config or secrets map reference for containerservice.azure.com identityProfile

[jamie-oconnell]

https://azure.github.io/azure-service-operator/reference/containerservice/v1api20231001/#UserAssignedIdentity

Support referencing configmap or secret for clientId & objectId for user assigned identity for identityProfile on containerservice.

apiVersion: containerservice.azure.com/v1api20231001
kind: ManagedCluster
metadata:
  name: example
  namespace: default
spec:
  location: westus3
  owner:
    name: aso-sample-rg
  identityProfile:
     principalIdFromConfig:
        name: identity-settings
        key: principalId
     clientIdFromConfig:
        name: identity-settings
        key: clientId