[QI2-1176] Update authentication with information retrieved from authconfig endpoint

[Mythir]

No description provided.

[eliasKA]

Looks good ✅

[oschusler]

Could you please change the name of the PR? The commit message should reflect what the commit does. It doesn't do "auth config"

[eliasKA]

@oschusler had another look at test_configuration.py

    await settings.fetch_auth_settings(host)
    auth_settings = settings.auths[settings.default_host] if host is None else settings.auths[host]

This should not be an issue and does not relate to the change of dropping the DEFAULT_CONFIG in the file. Whats happening is the following:

We check the behaviour of fetch_auth_settings in two cases:

1. When a host is provided (ie a user provides a host when doing a login)
2. When a host is not provided (ie a user does not provide a host when doing a login) in this case it should default to the default_host: Url = "https://api.qi2.quantum-inspire.com" hardcoded in the settings