System fields support in Popup Responses

Include user's system fields in Popup responses. Also, send them in API + Webhooks.

Make them available for integration fields mapping.

Expected System Fields -

  1. User IP
  2. User Browser
  3. User OS
  4. User Source
  5. User Geolocation
  6. Domain & Page visited
  7. User Language
  8. User Referrer
  9. User UTM details