camel-kubernetes - Add option on component to create kubernetes client

If you use quarkus
https://quarkus.io/guides/kubernetes-client

then it creates a KubernetesClient bean that camel-kubernetes will use. But if you dont use that, then its more difficult. We can add option on camel-kubernetes to create a default client if none provided.

The default client will automatic detect kubernetes and use it, when you run inside a pod. Otherwise using masterUrl is only for remote connecting from outside into k8s.