Add `kubectl edit --server-side`

**What would you like to be added**:

There's an ancient issue with Service ports having an insufficient merge key for client-side apply. This causes a lot of pain for people who try to `kubectl apply` (client-side) a Service, but it's fixed in server-side apply.

The issue also appears in `kubectl edit`, but there is no --server-side form of that.

Is it possible?

xref https://github.com/kubernetes/kubernetes/issues/115089

Start at the kubectl edit entry point and review the linked Kubernetes issue about Service port merge keys and server-side apply. Trace how edit currently submits changes, then determine the expected behavior for a --server-side form. Done means kubectl edit accepts the flag and avoids the stated client-side merge problem for Services.

Written by the indexing model from the issue text.