Enable autoawsume as default in config

[andymac4182]

For us we have very quick refresh's on our profiles. Currently they are 1 hour. We have modified the alias to be a zsh function that adds the -a to autoawsume every time. It would be great if that was a configuration that we could set to keep using the alias a using a function makes it a bit harder to add extra parameters on the end.

Thanks for this software.

Also FYI Starship has support for awsume now https://starship.rs/config/#aws