I remember buying a specific ship. Had to buy two. Then fly one to one sector and fly the other ship to the other sector. Once both are in place, generate a gate selecting the second ship as destination and do the same for the second ship selecting the first ship as the destination. Once both gates were placed both ships had to stay in position to "generate" their gates.
But I can't find the ship that does this. Don't remember requiring any mod and after a long search can't find any mod that does this anyway.
Thought at first it was an Otas ship that does this but after buying all of them, none of them have that command in custom, special, general or a command slot.
So thought it might be a Paranid ship and bought all of those with maximum rating. But it's none of those either. The only other thing I haven't tried is to test commands while actually in the ship in space, since some commands only appear when doing that (e.g. drop station can't be done remotely or while docked at a station).
Can anyone remember how to do this?
Update:
I've tested the command menus and slots of the following ships while in the ship in space. So far, none of them have the option to generate gates. But I notice I can't buy the Hyperion yet at Paranid Shipyards, even with max Paranid rating, so perhaps also need max combat rating of X=TREAM.
And perhaps this means there are still more ships not showing. 
Paranid
Hercules
Zeus
Odysseus
Poseidon
Agamemnon
Deimos
Nemesis MkIII
Otas
Boreas
Custodian
HCF
Reaper
Castrum
Argon
Mammoth
Colossus
Titan
Griffon
Cerberus
Centaur MkIII
Teladi
Albatross
Condor
Phoenix
Tern
Hawk
Osprey MkIII
Boron
Orca
Shark (still to test, need rating)
Ray (still to test, need rating)
Swordfish
Hammerhead
Hydra MkIII
Split
Elephant
Raptor
Python
Panther
Tiger
Dragon MkIII
Faunus
