Extend the Meteor command line to support GKE

[Primigenus]

It would be really nice to be able to deploy to GKE from the Meteor command line rather than having to install and invoke bash scripts separately. For instance, meteor gke deploy (or meteor deploy gke) could be a useful command. It would be even better if this functionality were available as a package so you can just meteor add gke to get these features.

We should find out if this is possible; Meteor MCLI allows you to write Meteor apps that target the command line so there may be some insight there.