Add support to specifiy scopes for social media login

[lakhansamani]

Feature Description

One should able to define scopes for the identity providers. So that they can make extra apis calls to identity providers and get result for other scopes:

Add Scopes/Permissions to Call Identity Provider APIs

Eg. If user wants to get more information from github using the access_token.

• Research more: https://auth0.com/docs/authenticate/identity-providers/adding-scopes-for-an-external-idp#change-identity-provider-settings
• Add implementation details
• Allow setting the scope for idp access token via dashboard
• Add idp_access_token in response to auth token when social media login is used
• Add idp_access_token support in all the SDKs

Describe the solution you'd like

Describe alternatives you've considered

Additional context