add 'kubectl kots gitops-info -n ns' to get gitops providers and keypairs

[laverya]

this is a hidden command

This also moves the 'gitops' package into kots from kotsadm in order to be accessible to the CLI

[sgalsaleh]

why move pkg/gitops/clone.go, pkg/gitops/key.go and pkg/gitops/types/gitops_interface.go? i think they should stay in kotsadm as the functions/types defined there are all related to kotsadm functionality, not kots.

[AmberAlston]

@laverya should this PR still be open?