Bring in vue-json-pretty

For pretty JSON formats (use on _ignis-config page)

https://www.npmjs.com/package/vue-json-pretty

It belongs to:
- UI module

It needs:
- dependency (`vue-json-pretty`)

```
`"vue-json-pretty": "2.6.0"`
```

- plugin to enable the component

```typescript

import VueJsonPretty from 'vue-json-pretty'

export default defineNuxtPlugin((nuxtApp) => {
nuxtApp.vueApp
.component('VueJsonPretty', VueJsonPretty)
})
```

- css file in nuxt config

```typescript
css: [
'vue-json-pretty/lib/styles.css',
],
```