Allow xink client auth via SSO vs Access Code

When a new user joins an organization, an administrator must log into xink and send an invite via email. For organizations with BYOD devices, we are hoping that Xink could update the xink client to support account lookup via SSO instead of needing an invite code. This feels like an option that would work very well for many customers, similar to the admin login to the app.xink.io portal with SSO. It also would allow organizations with email signatures on non-company computers to more easily authenticate their users so they could install the client, and log in without an administrators input.