Auth example

[lagleki]

It'd be nice to add an example ( supplemented by security rules) on authentication. Something like MVP of twitter

[stphnthiel]

SvelteFire looks really great and I’d love to make use of it. However, I have failed to figure out integration with Email Link sign-in.

The anonymous sign-in (as in the example) works, but I have no idea what else I need to prepare to hook up other auths.

Any help is greatly appreciated 🙏