docs: support multiple sidebars in a project (#11768)

* changed to new sidebar across projects except resources

* finalize multi sidebar support

* clean up

* remove redundant property

* small changes

* fixes

* generate

* fix error

* fix initial open

www/apps/resources/sidebars/plugins.mjs

@@ -1,19 +1,26 @@
-/** @type {import('types').RawSidebarItem[]} */
+/** @type {import('types').Sidebar.SidebarItem[]} */
 export const pluginsSidebar = [
   {
-    type: "link",
-    title: "Overview",
-    path: "/plugins",
-  },
-  {
-    type: "category",
-    title: "Guides",
+    type: "sidebar",
+    sidebar_id: "plugins",
+    title: "Plugins",
     children: [
       {
         type: "link",
-        title: "Wishlist",
-        path: "/plugins/guides/wishlist",
-        description: "Learn how to build a wishlist plugin.",
+        title: "Overview",
+        path: "/plugins",
+      },
+      {
+        type: "category",
+        title: "Guides",
+        children: [
+          {
+            type: "link",
+            title: "Wishlist",
+            path: "/plugins/guides/wishlist",
+            description: "Learn how to build a wishlist plugin.",
+          },
+        ],
       },
     ],
   },