docs(connect): how to migrate `launcher.launcherKubernetesProfilesConf` to `backends.kubernetes.defaultResourceJobBase`

[lucasrod16]

https://docs.posit.co/helm/examples/connect/upgrade-launcher-to-kubernetes/launcher-to-kubernetes.html#values-with-alternatives

We currently say:

The direct Kubernetes runner does not use profiles. Similar customization can be achieved using defaultResourceJobBase.

We should show specific launcher profile fields and examples.

Launcher profile doc references:

• https://docs.posit.co/ide/server-pro/admin/job_launcher/kubernetes_plugin.html#kube-profiles
• https://docs.posit.co/ide/server-pro/admin/job_launcher/kubernetes_plugin.html#kube-resource-profiles

example of a user asking about this use case: https://rstudioide.zendesk.com/agent/tickets/130026