fix: useNitroApp import warning

Closes #340

Author: harlan-zw

Diff for: src/runtime/nitro/routes/sitemap_index.xml.ts

@@ -1,10 +1,10 @@
 import { appendHeader, defineEventHandler, setHeader } from 'h3'
 import { joinURL } from 'ufo'
+import { useNitroApp } from 'nitropack/runtime'
 import { useSimpleSitemapRuntimeConfig } from '../utils'
 import { buildSitemapIndex, urlsToIndexXml } from '../sitemap/builder/sitemap-index'
 import type { SitemapOutputHookCtx } from '../../types'
 import { useNitroUrlResolvers } from '../sitemap/nitro'
-import { useNitroApp } from '#imports'
 
 export default defineEventHandler(async (e) => {
   const runtimeConfig = useSimpleSitemapRuntimeConfig()

Diff for: src/runtime/nitro/sitemap/nitro.ts

@@ -2,6 +2,7 @@ import { getQuery, setHeader } from 'h3'
 import type { H3Event } from 'h3'
 import { fixSlashes } from 'site-config-stack/urls'
 import { defu } from 'defu'
+import { useNitroApp } from 'nitropack/runtime'
 import type {
   ModuleRuntimeConfig,
   NitroUrlResolvers,
@@ -14,7 +15,7 @@ import { createNitroRouteRuleMatcher } from '../kit'
 import { buildSitemapUrls, urlsToXml } from './builder/sitemap'
 import { normaliseEntry } from './urlset/normalise'
 import { sortSitemapUrls } from './urlset/sort'
-import { createSitePathResolver, getPathRobotConfig, useNitroApp, useSiteConfig } from '#imports'
+import { createSitePathResolver, getPathRobotConfig, useSiteConfig } from '#imports'
 
 export function useNitroUrlResolvers(e: H3Event): NitroUrlResolvers {
   const canonicalQuery = getQuery(e).canonical