added packages to support markdown

added dummy pages for about and contact.
updated tailwind.config.js to include config/*.json to scan for classes.
refactored system basics. Removed component-props, using generic LayoutComponentDefinition and LayoutContext. cleanup component-map. Updated renderer to be more failsafe.

new abstracted components:
 vt-mega-menu,
vt-sidemenu,
vt-banner with 3 variants,
vt-header,
vt-homebutton,
vt-cartbutton,
vt-accountbutton,
vt-linkbutton,

src/modules/skeletons/components/vt-skeleton-mega-menu/index.tsx

@@ -0,0 +1,12 @@
+import LocalizedClientLink from "@modules/common/components/localized-client-link"
+
+export default function SkeletonMegaMenu() {
+  return (
+    <LocalizedClientLink
+      className="hover:text-ui-fg-base hover:bg-neutral-100 rounded-full px-3 py-2"
+      href="/store"
+    >
+      Products
+    </LocalizedClientLink>
+  )
+}