feat: render app shell with ssr to improve loading experience (#448)

composables/hydration.ts

@@ -0,0 +1,14 @@
+export const isHydrated = computed(() => {
+  if (process.server)
+    return false
+
+  const nuxtApp = useNuxtApp()
+  if (!nuxtApp.isHydrating)
+    return false
+
+  const hydrated = ref(false)
+  nuxtApp.hooks.hookOnce('app:suspense:resolve', () => {
+    hydrated.value = true
+  })
+  return hydrated
+})