First pass at custom cursor display

cmd/view-menu/main.go

@@ -45,6 +45,13 @@ func main() {
 		log.Fatal("Couldn't create window: %v", err)
 	}
 
+	// TODO: move this into driver. It will need to be able to change cursor.
+	cursor, err := assets.Cursor(assetstore.UltPointer)
+	if err != nil {
+		log.Fatalf("Couldn't load cursor: %v", err)
+	}
+	win.SetCursor(cursor.Image)
+
 	if err := win.Run(); err != nil {
 		log.Fatal(err)
 	}