Please add nushell completion

[MrRulf]

What would you like to be added:
kubectl completion nushell

Why is this needed:
Nushell is amazing for working with kubernetes, exceeding every other shell i know. The only disadvantage is the lack of completion.

[MayukhSobo]

@MrRulf
It can definitely be done, but there seems to be a blocker from the Cobra's side. There is a PR on the Cobra side that has not yet been merged for nushell completions. If that is not done, adding custom support at kubectl will be difficult. which is still not merged at the Cobra's side for nushell completions. If that is not done, then adding custom support at kubectl will be difficult.

[mpuckett159]

/triage accepted
With the note that this is depending on the Cobra PR noted above. We would accept this feature once that PR is merged.