Improve GoogleProvider type and better support social auth for SPA

[LoicPoullain]

Issue

• The type of the userInfo property returned by GoogleProvider.getUserInfo is of type any.
• In social auth, Foal only allows to get the consent page through a redirection and not a 200 response. This is not handy when building a SPA.

Solution and steps

• Add type to GoogleProvider.getUserInfo.
• Add a new createHttpResponseWithConsentPageUrl to get the consent page URL through an HttpResponseOK. This response includes the security cookie.

Checklist

• Add/update/check docs (code comments and docs/ folder).
• Add/update/check tests.
• Update/check the cli generators.