Refactor SSO code to make it easier for folks to implement their own upstream #775
Description
Is your feature request related to a problem? Please describe.
A lotta teams aren't going to support Google SSO. Right now to implement a different SSO you need to change ~3 different files.
Describe the solution you'd like
We should only maintain google
SSO as the supported process but split it out into a class or interface so all of the configuration is more modular and defined in a single location.