fix: implement new google auth workflow with TOTP

[mestuddtc]

No description provided.

[doughlass]

@stevemac007 @nonspecialist @SubravTeQL any chance you can merge and release this asap?

[tayopal]

seems appropriate. generalizing from 'old'/'new' into a set of potential flows is a worthy refactor, as there is already a reference an older-old: # Handle the "old-style" page

However, this should progress rapidly, as we are impacted by this in production.

[SubravTeQL]

@doughlass
Just use the google.py in your local python libraries.
https://github.com/cevoaustralia/aws-google-auth/blob/d363cad025233d59702fea5cad7422b705d0c46b/aws_google_auth/google.py
Path to google.py file must be in your error page.