Add the ability to have multiple credential profiles

[wizedkyle]

Is your feature request related to a problem? Please describe.
When using Sumocli in an environment with multiple accounts you would need to reconfigure Sumocli everytime you want to jump between an environment.

Describe the solution you'd like
Implement a "profile" ability for the commands to pick which credentials to use when authenticating. This will only affect the creds.json use not ENV variables.