[Numbers] add `cbrt` built-in function

[github-actions[bot]]

[Numbers] add cbrt built-in function the goal would be to have a function that returns the cubic root of a number potential use: https://rosettacode.org/wiki/Cubic_special_primes

https://github.com/arturo-lang/arturo/blob/411617a1906063cf0adfd3ac06804dc4b29403a0/src/library/Numbers.nim#L56

#=======================================
# Definitions
#=======================================

# TODO(Numbers) add `cbrt` built-in function
#  the goal would be to have a function that returns the cubic root of a number
#  potential use: https://rosettacode.org/wiki/Cubic_special_primes
#  labels: library, enhancement, new feature

proc defineLibrary*() =

    #----------------------------
    # Functions
    #----------------------------

    builtin "abs",
        alias       = unaliased, 

ac3e031455ddc42abff04bbcc96868dd8af0625c

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