Allow kubectl ate get workers to filter by namespace, atespace and label selector

[laoj2]

Today, kubectl ate get workers doesn't support -n/--namespace, -a/--atespace or -l/--selector , like kubectl ate top workers already does.

In multi-pool or multi-namespace clusters, unfiltered table output is noisy. kubectl ate get workers should support the same filtering flags as kubectl ate top workers.

kubectl ate get workers already displays NAMESPACE as its first column, so users naturally expect standard -n filtering to work when inspecting a specific WorkerPool namespace.

[HavenXia]

I thought I added that but seems the draft is still in my repo.