Extrude: to an object through the body, the automatic operation is Cut (#1633) (#1636)

Thanks @DuBearte.

crates/engine/src/lib.rs

@@ -31,7 +31,7 @@ use serde_json::Value;
 use solidcraft_doc::{Document, Model, ModelState};
 use solidcraft_geom::Vec3;
 
-pub use cmd::{CommandInfo, CommandSpec, auto_operation, command_specs, find_command};
+pub use cmd::{CommandInfo, CommandSpec, auto_operation, command_specs, extrude_reach, find_command};
 pub use solidcraft_doc as doc;
 pub use solidcraft_doc::Visibility;
 pub use solidcraft_geom as geom;