Add subtype units for geometry nodes

Hey there! There's this type of scenario where you are creating a geometry nodes asset and you use millimeters (or anything different than meters), So you choose the subtype "distance," and it's always in meters. Now, I'm aware you can change the scene options to separate units, but it's not the same thing.

My suggestion is to add subtype units, sometimes you want your units to be automatically meters and sometimes you want something more niche like centimeters without using math multipliers and such , I hope this feature gets considered and one day added 🙌