Merge pull request #35 from grafana/renovate/kubernetes-go

adding count of node types within nodepools

Merge pull request #11 from logyball/logyball/karpenter-label-1beta1-…

…update

Adding karpenter v1beta1 label as well as some tests

add support for Karpenter

Output improvements and label flag

- Fixes column padding in nodes list when node names were too wide.
- Adds new --label flag to pass a custom flag for finding the nodepool
  name.

Additional output flags and breaking change

This new version adds --no-headers and --output=name to control the
output returned by the plugin. It also introduces a breaking change
where list is not the default command anymore, so running `kubectl
nodepools` will return a help message instead.

Public release