Show type information on hover on VS Code Integration

[aaguiarz]

In models like the one below, it might not be obvious what's the type of each relation:

model
    schema 1.1

type user
type employee

type organization
    relations
        define admin : [user]
        define support: [employee]

type document
    relations
        define organization : [organization]
        define viewer : admin from organization or support from organization # user, employee
        define editor : admin from organization # user

For example, the 'viewer' relation can refer to a user or an employee, but the editor one, just to a user.

If the model got bigger, with more types/relations, it would be useful to have the VS Code Editor to provide typing information when hovering over the relation names. E.g. if I hover over 'viewer' it would say "user, employee".