bodhi CLI client based on bodhi-rs

This CLI client for bodhi-rs exposes almost all functionality of the official bodhi python client, and almost all features of the bodhi-rs rust bindings.

By default, bodhi-cli will store the FAS password in the session keyring, when the user is first prompted to enter it. To disable this, pass the --no-store-password / -n CLI switch. To ignore any previously saved passwords, pass the --ignore-keyring / -k CLI switch (for example, if you've changed your password).