Expand type syntax in grammar

There are certain types commonly used in Gremlin that should have some native support in the grammar:

• UUID
  • UUID() - random
  • UUID('1e077e63-e45a-4f8e-aa00-9b6ffd91f20e')
• Set
  • {1 ,2, 3} - borrow python syntax here
• Edge
  • Edge(11) - different than current syntax for Vertex, adjust Vertex to match - drop grammar support for ReferenceVertex.
• Binary (ByteBuffer)
  • Binary( '/9j/4AAQSkZJRgABAQEAAAAAAAD/==')