docs: added cloud documentation project (#12711)

www/apps/cloud/providers/sidebar.tsx

@@ -0,0 +1,25 @@
+"use client"
+import {
+  SidebarProvider as UiSidebarProvider,
+  useScrollController,
+} from "docs-ui"
+import { config } from "@/config"
+
+type SidebarProviderProps = {
+  children?: React.ReactNode
+}
+
+const SidebarProvider = ({ children }: SidebarProviderProps) => {
+  const { scrollableElement } = useScrollController()
+
+  return (
+    <UiSidebarProvider
+      scrollableElement={scrollableElement}
+      sidebars={config.sidebars}
+    >
+      {children}
+    </UiSidebarProvider>
+  )
+}
+
+export default SidebarProvider