Switch team on command line

[Mike Turner]

Would be good to be able to switch team on the cli, something like:
python epiccli.py accounts set_team <team_id/team name>

If team_id or team_name not specified then present the list of teams.
Once switched updated team should be stored in the config file.

[Mike Turner]

We could also move teams to a top level command, i.e.:
epic_cli team list
epic_cli team activate <name/id>