Missing directive definitions in GQL schema

[jsimnz]

Describe the problem
There are various directives that aren't defined within the GQL schema. They do still get parsed, but the directive definition should exist on the GQL schema.

Specific directives:

• @primary
• @relation

We can see all the directives correctly defined in request/graphql/schema/types.go with their various gql.NewDirective call but they don't get registered into the defaultDirectivesType() function

defradb/request/graphql/schema/manager.go

Line 112 in c117d84

func defaultDirectivesType() []*gql.Directive {

Additionally, the @crdt directive isn't defined at all, it only exists within the AST parsing code of fieldsFromAST function

defradb/request/graphql/schema/collection.go

Line 370 in c117d84

cType, err := setCRDTType(field, kind)