Surface Sweep: sheets carried from open curves and profiles along a path (#843)

Surface Sweep carries open curves and closed profile boundaries along a sketch path into surface bodies, with smooth walls along curved point paths. Adds the SurfaceSweep feature (format 18 note), the surface.sweep command, a dialog with Edit Feature support, and kernel and engine tests.

Part of #757.

crates/doc/src/params.rs

@@ -289,6 +289,7 @@ impl FeatureKind {
             | FeatureKind::BoundaryFill { .. }
             | FeatureKind::Loft { .. }
             | FeatureKind::Sweep { .. }
+            | FeatureKind::SurfaceSweep { .. }
             | FeatureKind::Import { .. }
             | FeatureKind::MeshImport { .. }
             | FeatureKind::BodyTransfer { .. } => {}