TYPO3 Core

`Build/Scripts/runTests.sh` is the monorepo main dispatcher of
script and tools to ensure same working state across developer
host system and installation by using well defined containers.
This mitigates issues with missing dependencies or wrong version
of tools on develper machines.

Until now local installation of `node` and `npm` in the matching
version was mandatory to work with the node ecosystem like manage
dependencies, executing node based tools or the build chain for
CSS and TypeScript/JavaScript.

Adding a npm dispatcher similar to the `composer` command dispatcher
#103045 would be a nice thing and easing the start for new contributors.