feat: rewrite to use app config and rework docs (#143)

Co-authored-by: Daniel Roe <daniel@roe.dev>
Co-authored-by: Sébastien Chopin <seb@nuxt.com>

docs/composables/useDocs.ts

@@ -0,0 +1,11 @@
+import { createSharedComposable } from '@vueuse/core'
+
+const _useDocs = () => {
+  const isSearchModalOpen = ref(false)
+
+  return {
+    isSearchModalOpen
+  }
+}
+
+export const useDocs = createSharedComposable(_useDocs)