chore(config-utl): converts to esm

[sverweij]

Description

• converts the config-utl modules to esm

TODO:

• convert the webpack config-utl
• decide whether we want to keep the cjs interface (and if so, how) - if so - separate PR
• document that all of a sudden it's possible to use es-modules for babel and dependency-cruiser configs.
• find out what exception we have to build in for the MS windows platform this time

Motivation and Context

See other ESM conversion PR's

How Has This Been Tested?

• green ci
• manual run-through

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Documentation only change
• Refactor (non-breaking change which fixes an issue without changing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• 📖

  • My change doesn't require a documentation update, or ...
  • it does and I have updated it

• ⚖️

  • The contribution will be subject to The MIT license, and I'm OK with that.
  • The contribution is my own original work.
  • I am ok with the stuff in CONTRIBUTING.md.