AWS SSO to credentials

This module need a configuration file that need to be stored in "~/.astc.cfg". If the module config is located in other path, the module need to be invoked using astc -c <astc-config-location>.

Example of ~/.astc.cfg file:

[aws_config]
credentials_file_path = ~/.aws/credentials
default_profile = eu-west-1

[profile_account_mapping]
<ugly_aws_sso_name> = <awesome_config_name>