Adds IPC as a species option for ERT

[poobsie]

What Does This PR Do

Adds IPCs as an option for ERT.

IPC names are chosen from the AI list.

IPC ERT are automatically implanted with the Experimental Defensive Implant, which gives them the effects of both sealed joints and the EMP resist implant.

Why It's Good For The Game

Equality, glory to Synthetica

The Defensive implant should generally mitigate the downsides that previously prevented IPCs from joining ERTs.

Testing

Spawned an ERT and joined as an IPC member, made sure I had the correct implant.

Declaration

• [x] I confirm that I either do not require pre-approval for this PR, or I have obtained such approval and have included a screenshot to demonstrate this below.

Changelog

:cl: tweak: IPCs can now join ERTs /:cl: