Make the "Kill every JOB" Objective Have an ID Tracker

[Mageziya]

Traitors can now get the objective to kill every person of a specific job. This can make for an interesting challenge, but there's a problem in that people rarely stay within their departments, with some people completely abandoning them for the entire round. Since this objective is essentially a glorified "Assassinate X" objective, the option to purchase an ID tracker from the PDA syndicate uplink would be greatly helpful.