fixes #586

• List all doctests below
• Rewrite doctests in Jest
• Remove doctest setup

List of doctests (batch 1)

Data-Structures/Array

• QuickSelect

Maths

• AverageMedian
• BinaryExponentiationRecursive
• EulersToient
• PrimeFactors

Sorts

• BogoSort
• BeadSort
• BucketSort
• CocktailShakerSort
• MergeSort
• QuickSort

String

• ReverseString
• ReverseWord
• ValidateEmail

List of doctests (batch 2)

Cellular-Automata

• ConwaysGameOfLife.js

Search

• TernarySearch

Sorts

• BubbleSort

List of doctests (batch 3)

Conversions

• RgbHsvConversion

Data-Structures/Vectors

• Vector2

Graphs

• BreadthFirstSearch
• BreadthFirstShortestPath

Maths

• EulerMethod
• Mandelbrot

Recursive

• FloodFill
• KochSnowflake