ecma402

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Support formatting ordinals & cardinals

Style Ordinal

console.log(new Intl.NumberFormat('en', { style: 'ordinal' }).format(2));
// 2nd

console.log(new Intl.NumberFormat('pt', { style: 'ordinal' }).format(2));
// 2.º or 2.ª (M/F)

Style Cardinal

console.log(new Intl.NumberFormat('en', { style: 'cardinal' }).format(2));
// second

console.log(new Intl.NumberFormat('pt', { style: 'cardinal' }).format(2));
// segundo or segunda (M/F)

Previous issue: #95. Let's keep this issue focused on Spellout and Ordinal specifically. However, the underlying code for these two styles is the same as for the algorithmic numbering systems (native, traditio, finance) listed in #95.

See some good discussion on https://github.com/tc39/proposal-intl-numberformat-v3/issues/22. CC @Bx1