Skip 2FA with OpenID Connect 

- Gitea version (or commit ref): 1.14.0+dev-353-gccfa40889

## Description

I have my OIDC provider which already asks for 2FA, but having 2FA enabled in Gitea makes users go through double 2FA authentication, which can be annoying.
Can you add an option to skip Gitea's 2FA when login in from an OIDC provider?

Thanks