Usage in nuxtjs3 (plugin attempt)

Hello,

I am trying to use this in a early adoption of nuxt3. The `vue-wait/nuxt`-plugin does not work, so I tried to create my own plugin:

```
import { createVueWait } from 'vue-wait'

export default defineNuxtPlugin((nuxtApp) => {
const VueWait = createVueWait({ registerComponent: false,})
nuxtApp.vueApp.use(VueWait);

return {
provide: {
wait: () => VueWait
}
}
})
```

But unfortunately, this gives me an error:

> Unhandled Promise Rejection: TypeError: $wait.is is not a function. (In '$wait.is("test")', '$wait.is' is undefined)

when I try to access it like this:

```
const {$auth, $wait} = useNuxtApp();

console.log($wait.is('test'))
```

Start by inspecting the vue-wait/nuxt plugin and comparing it with the shown defineNuxtPlugin entry point. Trace how the value returned by useNuxtApp() is provided, then reproduce the $wait.is('test') call in a Nuxt 3 app. Done means the Nuxt integration exposes a working $wait.is method without the reported error.

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