Add configurable stacked recipe layout

MMM-NextcloudCookbook.css

@@ -79,6 +79,14 @@
 }
 
 .MMM-NextcloudCookbook .ncc-columns {
+  display: block;
+}
+
+.MMM-NextcloudCookbook .ncc-layout-stacked section:first-child {
+  margin-bottom: calc(42px * var(--ncc-type-scale));
+}
+
+.MMM-NextcloudCookbook .ncc-layout-side-by-side {
   display: grid;
   grid-template-columns: minmax(260px, 0.8fr) minmax(400px, 1.4fr);
   gap: 42px;