Customize type attribute of script

**Is your feature request related to a problem? Please describe.**

As of [5.41.0](https://github.com/webpack/webpack/releases/tag/v5.41.0), webpack will output `.mjs` by default when experimental ECMAScript modules support is enabled. You can see a demo [here](https://stackblitz.com/edit/node-axut71?file=webpack.config.js).

I'm wondering if `html-webpack-plugin` can support customizing the `type` attribute of `script` element:

```js

```

**Describe the solution you'd like**

Add `type='module'` to `script` automatically when users enable experimental ESM support in `webpack.config.js`.

```js
module.exports = {
experiments: {
outputModule: true,
},
};
```

**Describe alternatives you've considered**

Add a `type` option so users can customize as they wish.

**Additional context**

Inizia tracciando il modo in cui il plugin genera l’elemento script e confronta quell’output con l’esempio in webpack.config.js che usa experiments.outputModule. Definisci se il completamento consiste nella gestione automatica di type="module", in un’opzione type configurabile dall’utente o in entrambe, quindi verifica l’HTML generato.

Scritto dal modello di indicizzazione a partire dal testo della issue.