Add IAA role

[Peptide90]

Description

IAA = internal affairs agent. In paradise they're a role in security and are tasked with investigating breached of SoP and inspecting departments. Kind of like a lite NT representative role.

Will obviously require SoP to be published. Probably stick it behind a role timer since it's an RP role specific to knowing our server. Less than 5 hours will do since someone can play 1 round and figure it out.