fix(devtools): import app utilities from #imports (#500)

Author: danielroe

packages/devtools/client/plugins/floating-vue.ts

@@ -1,5 +1,5 @@
 import FloatingVue from 'floating-vue'
-import { defineNuxtPlugin } from '#app'
+import { defineNuxtPlugin } from '#imports'
 
 export default defineNuxtPlugin((nuxtApp) => {
   nuxtApp.vueApp.use(FloatingVue)

packages/devtools/src/runtime/plugins/devtools.server.ts

@@ -1,6 +1,5 @@
 import type { TimelineServerState } from '../../types'
-import { defineNuxtPlugin } from '#app'
-import { useState } from '#imports'
+import { defineNuxtPlugin, useState } from '#imports'
 
 export default defineNuxtPlugin(() => {
   // record ssr start time

playgrounds/module-starter/src/runtime/plugin.ts

@@ -1,4 +1,4 @@
-import { defineNuxtPlugin } from '#app'
+import { defineNuxtPlugin } from '#imports'
 
 export default defineNuxtPlugin((_nuxtApp) => {
   // eslint-disable-next-line no-console