have fieldEdge in StructType work in GraphQL and maybe ent?

[lolopinto]

would be nice to have the following work

StructType({
  foo_list_id: UUIDListType({
    fieldEdge: {
      schema: 'Foo',
    },
  }),
  bar_id: UUIDType({
    fieldEdge: {
      schema: 'Bar',
    },
  }),
})

in GraphQL

foo_list: Foo[]!
bar: Bar

currently, in GraphQL we return ids