[#181] add 'selected' class on double click, which is not visible on desktop ( but we can easily opt to leave it there if we would want to )

src/web/waiters/OperationsWaiter.mjs

@@ -244,6 +244,8 @@ class OperationsWaiter {
     operationDblclick(e) {
         const li = e.target;
 
+        e.target.classList.add('selected');
+
         this.manager.recipe.addOperation(li.getAttribute('data-name'));
     }