metadata from OAuth providers

[carlospliego]

As per the documentation: http://horizon.io/docs/auth/1

"Currently, no metadata from OAuth providers—for example, friend/following lists— can be requested. In the near future, Horizon will support authentication scopes for selected providers to request access to these details, and returned metadata will be stored in the Users table."

I deeply need support for this. Any idea on when this will be a feature? If not, will you accept PR's?
Event a suggested work around would be great.

Discussion Here:
https://discuss.horizon.io/t/oauth-metadata-for-horizon-io-authentication/566