Added (terrible) implementation of `tsh show`
Added (terrible) implementation of `tsh show`

yacloud-io/teleport,yacloud-io/teleport,gravitational/teleport,yacloud-io/teleport,gravitational/teleport,sokoow/teleport,gravitational/teleport,yacloud-io/teleport,gravitational/teleport,sokoow/teleport,yacloud-io/teleport,gravitational/teleport,yacloud-io/teleport,sokoow/teleport,gravitational/teleport,sokoow/teleport,yacloud-io/teleport,sokoow/teleport,sokoow/teleport