Add Caribbean Guilder (XCG)

[MathijsK93]

In this PR we're adding the Caribbean Guilder currency

https://en.wikipedia.org/wiki/Caribbean_guilder

[kocasp]

This is becoming quite urgent

[MathijsK93]

This is becoming quite urgent

In the meantime you can add an initializer:

# frozen_string_literal: true

require "money"

caribbean_guilder = {
  priority:              100,
  iso_code:              "XCG",
  name:                  "Caribbean Guilder",
  symbol:                "Cg",
  alternate_symbols:     [],
  subunit:               "Cent",
  subunit_to_unit:       100,
  symbol_first:          true,
  html_entity:           "",
  decimal_mark:          ",",
  thousands_separator:   ".",
  iso_numeric:           "532",
  smallest_denomination: 1

}
Money::Currency.register(caribbean_guilder)