Not spectatable ability

[Camerooooon]

Is your feature request related to a problem? Please describe.
On my private server I created a spy role who is a Class D that is indistinguishable from other Class Ds other than the fact that he is part of the scp team. The issue is players who are dead can easily spectate the spy and figure out who he is and once they respawn they can easily kill them.

Describe the solution you'd like
Create an ability type that prevents the player from being spectated that way it is much more difficult for dead players to figure out who the spy is.

Describe alternatives you've considered
There isn't an alternative that I could think of.

Additional context
No