Add Code Actions to the Toolbar (#31236)

Closes issue #31120.


https://github.com/user-attachments/assets/a4b3c86d-7358-49ac-b8d9-e9af50daf671

Release Notes:

- Added a code actions icon to the toolbar. This icon can be disabled by
setting `toolbar.code_actions` to `false`.

crates/editor/src/mouse_context_menu.rs

@@ -226,7 +226,7 @@ pub fn deploy_context_menu(
                 .action(
                     "Show Code Actions",
                     Box::new(ToggleCodeActions {
-                        deployed_from_indicator: None,
+                        deployed_from: None,
                         quick_launch: false,
                     }),
                 )