FedCM support

[michielbdejong]

I'm looking at including https://github.com/Liquid-Surf/fedcm-demo into #33

[michielbdejong]

[michielbdejong]

[michielbdejong]

It's still getting the wrong identity though:

[thhck]

Awesome !! <3

Was it fine to install it ?

It's still getting the wrong identity though:

Do you say that because of the "John Doe" ? this is just hardcoded credential, I could add some code that fetches some data and put it there instead, but what could it be ? the podname ? the user's email address ?