I would like to know if with your plugin and the authentication forms add-on I could use a plugin to register or login with social networks like google.
We don’t have such a feature, and this is not / won’t be planned, sorry.
You could try to add that feature with third party plugins from the market, but you’ll probably need to check this FAQ if you’re encountering graphical issues with those plugins, on the frontend login pages from the Authentication Forms add-on: