Add support for oauth.getRedirectResult()

[joshuascan]

Is your feature request related to a problem? Please describe.
The current connector has support for social logins via oauth.loginWithRedirect, but does not have support for getting the redirect result.

I was able to manually trigger the getRedirectResult method to call at the appropriate time through a URL query search, but the connector/package should have this integrated into it's functionality, possibly as an option in it's configuration. This workaround also required me to install the @magic-ext/oauth package.

For example, it could look something like this:

oauthOptions: {
          providers: ["google", "twitter", "github"],
          getRedirectResult: true
        },