You’re stuck with either a clunky, somewhat non-standard schematic symbol; or a custom footprint that applies to a relatively small number of parts. “For every solution, there’s a problem!” as a former supervisor used to say.
I faced an essentially identical problem with a 3-terminal regulator in TO-220 package a few weeks ago. I discussed my approach in the thread, “Multiple Pin Components” at Multiple pin components
If the component datasheet identifies pins as “1”, “2”, “3”, “4”, then I’d try to stick with that in both symbol and footprint to the extent that you can. Creating “Pin 0” seems like a bad idea to me, also.
Dale