Add Catala rule

Catala 1.2 :

necessary fix :

• list.map(function) => map(function, list)

• fold_left

  def somme(l:List[Money] ) -> Money: def _somme__1(total:Money , x:Money ): return (total + x) somme__1 = Function(_somme__1) return l.fold_left(somme__1, Money(‘0.00’))

  -> sum(l)