assignLang method

Implementation

void assignLang() {
  _colorize
    ..green('Bienvenido / Welcome \n')
    ..cyan(
      'Please, choose your language / Por favor selecciona tu idioma \n',
    );

  _langWrapper.chooser(['English', 'Espanol']).let(
    (final op) => isEnglish = op == 'English',
  );
}