Option to find custom structures using /locate command

As I test MCreator mods with my own, I started noticing how people are trying to create structures in MCreator but the structures does not show up with the /locate command. What this means is that MCreator is only allowing people to make "features" instead of true "structures" which limits how big of structures people can make and makes it harder to find said structure. 

By adding the option to make true structures, people using MCreator can make larger structures that aren't limited to a 32x32 area, can be found with /locate command, can set minimum and maximum distance between their structure, and much more. It'll also help with mod compatibility with mods that look for structures instead of features. :)