Feature Request: Run with krew

[denhamparry]

To help raise awareness of am-i-isolated, it'd be good to offer it within krew.

Krew has a number of tools and integrations, so adding am-i-contained would be a good way to get it in front of others.

I'd expect it to run am-i-contained as a pod within a cluster and provide the output to the end user via:

kubectl krew install am-i-isolated
kubectl am-i-isolated