CLI should check if token has expired

[bacongobbler]

I've noticed when attempting to run commands the following day, I see errors like the following:

><> hippo app add helloworld helloworld
Error:

Under the hood, the client received a 401 Unauthorized response from the API server.

The CLI should do two things:

1. If the token in the local config cache has expired, prompt the user with their password to reissue a new token.
2. If the token has NOT expired AND the client receives a 401 Unauthorized response, prompt the user to log back in with authorized credentials (e.g. log in as an administrator)