Move endpointslice watch to .Reconcile()

[mjnagel]

Describe what should be investigated or refactored

Currently the endpointslice for KubeAPI generated policies is handled as a Watch. This should be moved into a queue, using the Reconcile functionality to handle the processing seamlessly.

Links to any relevant code

• uds-core/src/pepr/operator/index.ts

  Lines 31 to 36 in 40e6b7b

  	// Watch for changes to the API server EndpointSlice and update the API server CIDR
  	When(a.EndpointSlice)
  	.IsCreatedOrUpdated()
  	.InNamespace("default")
  	.WithName("kubernetes")
  	.Watch(updateAPIServerCIDRFromEndpointSlice);

• https://docs.pepr.dev/main/user-guide/actions/#reconcile