[Lego] Add Support for Lego Brick Meshes to Niagara

It would be awesome to use Lego bricks with particle systems. Think bricks for impact effects or magical spells and auras. I understand there are restrictions with size, scale, color, and clipping with Lego so I am fine with it being restricted on those parameters. Maybe a dedicated alternate set of materials for bricks so it would be compatible with Niagara.

Thanks for reading!