Add fuzzing test against built-in array

[dubzzz]

Related to #67 and #68

The bugs seems really tricky and rare, I did use the option { numRuns: 10000 } of fc.assert to make the test less flaky locally (to fail everytime).

[codecov]

Codecov Report

Merging #69 into master will increase coverage by 0.06%.
The diff coverage is n/a.

Impacted Files	Coverage Δ
src/curried.ts	100% <0%> (ø)	⬆️
src/index.ts	98.99% <0%> (+0.1%)	⬆️

[dubzzz]

@paldepind Do you want me to commit the fuzzer test suite?
I can rebase the review if needed

[paldepind]

Oh. I forgot about this 😓

Yes! I'd definitely like to merge this. Please rebase 😄

[dubzzz]

I just rebased it.

If you encounter failing cases for which fast-check takes too long, please let me know.
I am still working on reducing the time it takes to shrink commands, arrays and all other data-structures. For the moment, the solution is to use noShrink but I am thinking on adding some kind of time limit after which shrinking will be stopped dubzzz/fast-check#286

[paldepind]

Thanks a lot @dubzzz. This looks good to me and seems to work great 👍