Add Support for `nonce` Attribute

[khelil]

Hi 🖖

I'm trying to configure the plugin with France Connect, the french government SSO.

After configuration and connection try, i've got this error : {"status":"fail","message":"The following fields are missing or empty : nonce"}

I've looked for previous issues and looks like the nonce param is not set in the plugin as it is optional for an OpenId flow. The problem is that nonce param is requested from France Connect.

Is it planned to add this to the plugin ?

Thx