[MERGED PR] Adds the Security Assistant job

[Flourish]

Having the sec assistant count as more rounds would be really neat, but right now, with the code that we have, it's not possible. I could maybe do something where you get job XP as a security assistant, and if you have enough XP, you can bypass the security officer timelock, but that would be in another PR. If most people think that 50 is too high, then I can also just change it to 30 for now!