Support for Unsupported, dbgenerated() and @@ignore

[do4gr]

We've introduced two new schema properties and also changed dbgenerated(). We'd like to get support for these from the VsCode extension as soon as possible. Just not highlighting them as wrong would be fine in the beginning.

The changes in the first model are already implemented, the @@ignore from the second will also hopefully be done this sprint.
Unsupported is a new type containing a String description of a db type for migrate. It does not allow for a native type at the same time.
The db generated default changes to now always take one String argument. That is the db description necessary to set the default for migrate.

@@ignore is a new model level directive that tells the client to ignore this model. It has no arguments and is valid on all models.

model Simple {
  id                Int                                     @id @db.Integer
  new            Unsupported("money") @default(dbgenerated("12"))
}

model NoId {
  id                Int                                     
  @@ignore
}

AC:

• Don't show errors on the VSCode
• (Potential) Add autocomplete for Unsupported() (again, if easy)
• Grey out fields and models for [@]@ignore `
• The new Native Types are shown:
  Postgres: Money (mapped to Float Prisma scalar),
  Postgres: InetAdress (String)
  Postgres: OID (Integer)
  Postgres: citext (String)
  MySQL: Set (String)
  Unsupported()

[albertoperdomo]

@janpio is suggesting we split the new types from supporting Unsupported+dbgenerate, @@ignore.
DO you agree it make sense @martzoukos @do4gr ?

[Jolg42]

@madebysid made these 2 PR

#684
#685

[sdnts]

On the latest Insiders version, I have verified that these things work:

• @db.Money (Postgres)
• @db.Inet (Postgres)
• @db.Oid (Postgres)
• @db.Citext (Postgres)
• @db.Set (MySQL) (this is not returned by prisma-fmt @do4gr, is this expected? I'll create an issue if yea)
• Unsupported("") with autocomplete

Greying out @@ignored models is a bit more work so I've created a separate issue (#689) for it that we can tackle after this release, since there's significant work to be done in Studio yet.

@ignore is not yet supported by engines, so there's only a draft PR open: #688. I'll merge this in next week.

There's one PR open for dbgenerated(): #687 which will close this issue.

[Jolg42]

@madebysid @tomhoule mentioned (in our team slack) that @db.Set (MySQL) was not implemented yet.