Support multiple parameter lists (and extension methods)

[KacperFKorban]

It should be possible to use methods with multiple parameter lists and extension methods with GUInep

e.g.

def addManyParamLists(a: Int)(b: Int): Int =
  a + b

enum IntTree:
  case Leaf
  case Node(left: IntTree, value: Int, right: IntTree)

extension (elem: Int)
  def isInTreeExt(tree: IntTree): Boolean = tree match
  case IntTree.Leaf => false
  case IntTree.Node(left, value, right) =>
    value == elem || elem.isInTreeExt(left) || elem.isInTreeExt(right)