* Adds a configuration knob CODER_OIDC_IGNORE_EMAIL_VERIFIED that allows
ignoring the email_verified OIDC claim
* Adds warning message at startup if CODER_OIDC_IGNORE_EMAIL_VERIFIED=true
* Adds warning whenever an unverified OIDC email is let through
* Skips flaky test on non-linux platforms
Co-authored-by: Mathias Fredriksson <mafredri@gmail.com>