Splits the given array into chunks of the given size and returns them

Example:

import { chunk } from "https://deno.land/std@0.131.0/collections/mod.ts";
import { assertEquals } from "https://deno.land/std@0.131.0/testing/asserts.ts";

const words = [ 'lorem', 'ipsum', 'dolor', 'sit', 'amet', 'consetetur', 'sadipscing' ]
const chunks = chunk(words, 3)

assertEquals(chunks, [
    [ 'lorem', 'ipsum', 'dolor' ],
    [ 'sit', 'amet', 'consetetur' ],
    [ 'sadipscing' ],
])