add smt mounting hardware by wuerth
scripted 3d models for the smt mounting hardware by wuerth added in https://github.com/KiCad/kicad-footprints/pull/1612
script found in https://github.com/easyw/kicad-3d-models-in-freecad/pull/284
scripted 3d models for the smt mounting hardware by wuerth added in https://github.com/KiCad/kicad-footprints/pull/1612
script found in https://github.com/easyw/kicad-3d-models-in-freecad/pull/284