Another way to set the override material for each texture

[PaperMartin]

Right now in order to override a texture's material, the material has to be named the same thing as this texture, and be in the same folder
I have PBR materials made with substance designer, which means the colored textures have _basecolor in their name which isn't really appropriate for a material
I could always make a placeholder texture or something with the proper name, but it's not really ideal
it'd be nice to just have a list somewhere of every texture and their corresponding override material that we can edit