Faces by name in the face commands; model.faces gives a point on each face (#1243)

crates/engine/src/lib.rs

@@ -928,6 +928,8 @@ mod display_mesh_tests;
 #[cfg(test)]
 mod extent_tests;
 #[cfg(test)]
+mod face_name_tests;
+#[cfg(test)]
 mod hole_face_tests;
 #[cfg(test)]
 mod hole_matrix_tests;