Add prerequisites for practice exercises

[TomPradat]

This aims to add prerequisites for some exercises in #984

[github-actions]

Dear TomPradat

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[TomPradat]

Here is my solution : https://exercism.org/tracks/javascript/exercises/transpose/solutions/TomPradat

I'm kinda facing a dilemma here : Either we consider that we can solve this exercise like I did, i.e without array-transformations and/or array-analysis or we add the two latest prerequisites (as used in the majority of community solutions I've seen) but it's a shame given the difficulty of the exercise.

Either ways, I'd recommend increasing the difficulty to 3 or 4. This exercise resembles matrix whose difficulty is 3.

[SleeplessByte]

Lets increase the difficulty and lets NOT add the array prereqs. If it's harder, people are bound to have more experience, so we'll see more people solving it your way.

3 is fine.

[TomPradat]

118baee

[TomPradat]

Here is my solution : https://exercism.org/tracks/javascript/exercises/largest-series-product/solutions/TomPradat

[TomPradat]

My solution : https://exercism.org/tracks/javascript/exercises/scale-generator/solutions/TomPradat

I found mstange22's and the proof solution more concise and understandable so I filled the prerequisites according to these

[SleeplessByte]

@TomPradat can you also increase the difficulty? Feel free to merge if you can, or ping me and I will.

[TomPradat]

@TomPradat can you also increase the difficulty? Feel free to merge if you can, or ping me and I will.

Done @SleeplessByte ! I cannot merge on my own though