@spec choice(String.t() | {term(), term()}, String.t()) ::
  {String.t(), String.t(), boolean()}

Normaliza uma opção em {rótulo, valor, marcada?}.

Attributes

• field (Phoenix.HTML.FormField) - Defaults to nil.
• id (:any) - Defaults to nil.
• name (:any)
• value (:any)
• options (:list) (required) - strings ou {rótulo, valor}.
• label (:string) - Defaults to nil.
• orientation (:atom) - Defaults to :vertical. Must be one of :vertical, or :horizontal.
• errors (:list) - Defaults to [].
• disabled (:boolean) - Defaults to false.
• class (:any) - Defaults to nil.
• Global attributes are accepted. Supports all globals plus: ["form", "required"].