Resurrect code splitting switch

[padcom]

Do you want to request a feature or report a bug?
Bug (it has been broken since the release of version 10)

What is the current behavior?
No switch to direct Webpack to split code for vendor.js and main.js. It is not synonymous if we want to d code splitting just by saying we want an UMD or CJS module. It is NOT JUST about building libraries but also applications where you DO want to have the code split into 2 chunks. Sure I can configure that manually but what would I use POI for in that case?

What is the expected behavior?
Allow for code splitting regardless of the build format.

Please mention other relevant information such as the browser version, Node.js version, Poi version and Operating System.

POI: 10.2.9

[github-actions]

This issue has been marked as Stale, it will be closed in a week if there's no furthur activity.