DRAFT: Allow (Pod) label values as table columns

[KevinGimbel]

Doesn't work yet.

I'm unsure if the direction is correct.

The idea from #3050 is to allow custom pod labels to be used as column values in the pod view.

For example:

• given a pod with a Label severity=high
• the following views.yaml config

# views.yaml
views:
  v1/pods:
    columns:
      - name: NAME
      - name: LABEL
        key: severity

would result in the following k9s view table being rendered

NAME    severity   STATUS   READY
my-pod  hight      Running  1/1

Potentially, this could be used for all resources but I don't know where to best place the code.

[KevinGimbel]

Another idea from #3011

views:
   v1/nodes:
      columns:
          - Capacity-Type: .metadata.labels.eks\.amazonaws\.com/capacityType
          - Instance-Type: .metadata.labels.eks\.amazonaws\.com/instance-type
          - AZ: .metadata.labels.topology\.kubernetes\.io/zone

This would add a key-value mapping where the key is the column name, and the value is the (label) source.