Changes to List Connections

added the new optional query request parameter include_shared

added the non-success response with the status 422

added the optional property connections/items/is_owner to the response with the 200 status

added the optional property connections/items/owner to the response with the 200 status

added the optional property connections/items/privacy to the response with the 200 status

added the optional property connections/items/shares to the response with the 200 status

added the optional property connections/items/unreadable_secret_fields to the response with the 200 status