Add pluralize function

[aleclarson]

It turns a singular noun into a plural noun based on a given number.

Requirements

• Its default behavior is “dumb”:

  function pluralize(noun, count, pluralSuffix = 's') {
    return count !== 1 ? noun + pluralSuffix : noun
  }

• It can be customized to support more nuanced handling and/or different languages
  • An example of custom behavior:
    • If the noun ends in an "s", "x", "z", "ch" or "sh", add "es"
    • If the noun ends in a "y" and is preceded by a consonant, drop the "y" and add "ies"
    • If the noun ends in a "y" and is preceded by a vowel, add "s"