Webpack 5 deprecation: chunk.files

Enabling the hash and/or using the transformFile option in combination with webpack 5 will throw a deprecation warning:

```
(node:2114) [DEP_WEBPACK_DEPRECATION_ARRAY_TO_SET_PUSH] DeprecationWarning: chunk.files was changed from Array to Set (using Array method 'push' is deprecated)
```

webpack-merge-and-include-globally npm version: 2.3.4 
webpack version 5.5.0
