chore: reorganize docs apps (#7228)

* reorganize docs apps

* add README

* fix directory

* add condition for old docs

www/apps/book/components/Navbar/index.tsx

@@ -0,0 +1,36 @@
+"use client"
+
+import { Navbar as UiNavbar, getNavbarItems } from "docs-ui"
+import { useSidebar } from "docs-ui"
+import { useMemo } from "react"
+import { config } from "../../config"
+
+const Navbar = () => {
+  const { setMobileSidebarOpen, mobileSidebarOpen } = useSidebar()
+
+  const navbarItems = useMemo(
+    () =>
+      getNavbarItems({
+        basePath: config.baseUrl,
+        activePath: "/",
+      }),
+    []
+  )
+
+  return (
+    <UiNavbar
+      logo={{
+        light: "/images/logo-icon.png",
+        dark: "/images/logo-icon-dark.png",
+      }}
+      items={navbarItems}
+      mobileMenuButton={{
+        setMobileSidebarOpen,
+        mobileSidebarOpen,
+      }}
+      isLoading={false}
+    />
+  )
+}
+
+export default Navbar