Create extension

• Create the extension
• This extension should require: https://github.com/Propaganistas/Laravel-Intl

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• This extension will provide an addon: currency-field_type (similar to decimal-field_type)
  • config.php will be only: min, max, default_value
  • FieldType will be similar to decimal but cleanup the config too
  • FieldTypeSchema will be similar, but without the config too (replace by false)
  • FieldTypePresenter will have format and currency too, but it will use Propaganistas/Laravel-Intl number() and currency()