I thought about it and said, "fuck it", there is none.
What I am going to say is this, treat it like a character page for Aeria RP. You can be as wacky and zany as you want, just no powergaming as usual. I don't really know how you could powergame an empire other than going "DURR HURR I HAVE 10000 PLANETS"
For those of you who are new, base your empire's info off of those who have already posted theirs.