chore: auth get to retrieve local api keys

[notnmeyer]

retrieves a locally stored api key. useful for using the cli to provide your api key when you need it.

➜ loops auth get my-team
askjldfkljdsfadskljfds

➜ loops auth get loops-test -ojson
{
  "name": "my-team",
  "apiKey": "askjldfkljdsfadskljfds"
}