enableVersioning(enabled = true) {
        webpackConfig.enableVersioning(enabled);

        return this;
    }
When enabled, files are rendered with a hash based
on their contents (e.g. main.a2b61cc.js)

A manifest.json file will be rendered to the output
directory with a map from the original file path to
the versioned path (e.g. `builds/main.js` => `builds/main.a2b61cc.js`)

Note that the versioning must be disabled if you
want to use the dev-server.

For example:

```
Encore.enableVersioning(Encore.isProduction());
```

@param {boolean} enabled
@returns {Encore}