Convenience script to launch generator

[keiravillekode]

I synced the connect exercise using

bin/run-generator -r

[github-actions]

This PR touches files which potentially affect the outcome of the tests of an exercise. This will cause all students' solutions to affected exercises to be re-tested.

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[keiravillekode]

I don't mind what name we give the script. It is most convenient to launch everything from the main directory, instead of launching the generator from within the generators directory.

If this becomes the canonical way to launch the generator, we can change showUsage to have

bin/run-generator [Options] ...

[keiravillekode]

We can also mention the generator in CONTRIBUTING.md - I don't have any preferred wording.

[oxe-i]

I don't mind what name we give the script. It is most convenient to launch everything from the main directory, instead of launching the generator from within the generators directory.

If this becomes the canonical way to launch the generator, we can change showUsage to have

bin/run-generator [Options] ...

Will do. I have a script here to generate the doc from the module comment on the generator.

I'll also adjust the contribution guidelines to be more incisive on posting on the forum before making a PR.

[keiravillekode]

I use tab completion: without thinking, my fingers type bin/v tab or bin/g tab . So the clash with reorder-exercises when I type bin/r tab is unfortunate. So in a later PR that could become sort-exercises, or this could become generate. Up to you.