New field for staff members hidden from API.

[Picsou993]

Currently, when a staff member hides itself from the api, we only have few information and that's intended.
However would it be possible to have a field "hidefromapi":true when they are hidden from it so we can detect it more easily.

[mdashlw]

This would be helpful, but unfortunately it was already suggested a long time ago, and since it still hasn't been implemented, I assume it was rejected