[ New Command ] Introducing new command for fetching the runners info

In the current version of the glab, we don't have a command that can interact with the runners. That means you cannot list, manage, or register GitLab Runners directly via glab CLI. image

and many more, like pausing and resuming the runners. There are lots of advantages of accessing the runners using the CLI, cc: @timofurrer @adebayo_a

Proposing commands:

  • glab runners list [--project ] [--group ] [--all]
  • glab runners show
  • glab runners pause
  • glab runners resume