granular_scopes added to DebugTokenInfo

[maxrasche]

The /debug_token endpoint's response contains the field "granular_scopes" which is not mapped in FacebookClient.DebugTokenInfo:

"granular_scopes":[
  {
    "scope":"pages_show_list",
    "target_ids":[
      "{page-1-app-can-access-id}",
      "{page-2-app-can-access-id}"
    ]
  }
]

The target_ids field is ommitted if a user grants an app a specific permission in general and not for only a subset of possible Pages, Groups, Instagram Accounts, etc.

Graph API Docs: https://developers.facebook.com/docs/facebook-login/access-tokens/debugging-and-error-handling
Facebook Login Docs: https://developers.facebook.com/docs/facebook-login/permissions/overview#granularpermissions

[nbartels]

Thanks for the PR. I have a look at this later on ...