Desktop: Support cursor icon change (#3223)

* browser console message forwarding

* replace target to make it easy to identify browser console messages

* use warn as per review comment

* cursor icon change

* fix win build

desktop/src/event.rs

@@ -3,6 +3,7 @@ use graphite_desktop_wrapper::messages::DesktopWrapperMessage;
 
 pub(crate) enum AppEvent {
 	UiUpdate(wgpu::Texture),
+	CursorChange(winit::cursor::Cursor),
 	ScheduleBrowserWork(std::time::Instant),
 	WebCommunicationInitialized,
 	DesktopWrapperMessage(DesktopWrapperMessage),