schematica is for pre 1.13 litematica is the same thing but for 1.13+

There is already a pr for support for *.litematic and im assuming an issue aswell, for now you can use *.schem which is for 1.13+ and you can use world edit to make these and baritone should be able to build them

Duplicate of #668

The pull request was #2338 and now is #2544