Connect SSO after login

[erlend-sh]

As a complement to #35 we need a way for users to add their preferred social login after they’ve already logged in, since we don’t allow an existing user to log in via a social provider if the email match:

We just need a ‘Add login provider’ button at the bottom of the https://weird.one/auth/v1/account page.

(We are quickly filling up this account page, so we’ll need multiple tabs for it soon.)

[kimlimjustin]

Umm... Are we going to allow multiple social provider accounts linked to one weird account? Or are we allowing only one social provider account linked to an account?

The current implementation of Rauthy allows only one provider though (https://github.com/sebadob/rauthy/blob/e7415111426f1e2d6595ac26dc64305c79cc7632/rauthy-models/src/entity/users.rs#L54-L76)

[erlend-sh]

only one social provider account linked to an account?

we’re fine with just that for now. What we are trying to solve for is:

• user has registered by email
• user wants to authenticate with a social provider so they can login with that instead of email.

[kimlimjustin]

Pushed a PR for this (#58)