Improve CAD workspace functionality and user experience

src/ui/window/mod.rs

@@ -2,6 +2,9 @@ pub mod about;
 pub mod block_definition;
 pub mod block_palette;
 pub mod browser;
+pub mod graphic_attributes;
+pub mod gradient_editor;
+pub mod hatch_editor;
 pub mod layout_manager;
 pub mod layer_state_manager;
 pub mod drawing_units;