feat: Support OAuth user register

Created by: leoendless

Signed-off-by: leoliu leoliu@yunify.com

What type of PR is this?

/kind feature

What this PR does / why we need it:

The third-party user login with OAuth should confirm their email and username.

Which issue(s) this PR fixes:

Fixes #

Special notes for reviewers:

Additional documentation, usage docs, etc.: