Add git-like alias

[ambsw-technology]

I think the commands would be more intuitive if they mirrored git/docker e.g. (edit: add/tweaked mappings):

• init = clone (or fetch)
• pull = pull
• plan = status (diff only shows unstaged changes so it's not the same)
• apply = push

Certainly alias them for backwards compatibility, but consider deprecating the old names.