Interactive executor output (Slack)

[lpetkov]

Overview

Make kubectl and helm output interactive when the returned result is a list of items.

Example 1, list of pods:

Upon selection, provide a detailed version of the output for the specific item (pod):

And introduce a drop-down with relevant actions for this list item (pod).

Example 2, helm list of releases:

Acceptance Criteria

Both a generic and a 'hard-coded' solution are acceptable in terms of which commands' output to make interactive.
Optional: We can have a drop-down representation of the list for longer lists and radio buttons for shorter lists (up to 5 items)
Make it work for both helm and kubectl, possibly provide a way for 3rd party executors to do this?

Reason

A good user experience is to not only get a list of things when you request them, but to be able to act quickly on that list whenever possible.