GraphQL SDL support for repeatable directives

[MattA48]

Is there an existing request for this feature?

• I have searched the existing issues for this feature request

Is your feature request related to a problem?

I am trying to consume our GraphQL schema generated by .NET / HotChocolate library and it's failing due to not accepting repeatable on a directive

Describe the solution you'd like

Support for repeatable on directives for GraphQL SDL

Describe alternatives you've considered

No response

Additional context

Repeatable directive in GraphQL draft spec: https://spec.graphql.org/draft/#sec-Type-System.Directives
GraphQL repeatable directive PR: graphql/graphql-spec#472

The segment of SDL that is failing in Postman (red squiggle on repeatable - expected 'on')
directive @authorize("The name of the authorization policy that determines access to the annotated resource." policy: String "Roles that are allowed to access the annotated resource." roles: [String!] "Defines when when the resolver shall be executed.By default the resolver is executed after the policy has determined that the current user is allowed to access the field." apply: ApplyPolicy! = BEFORE_RESOLVER) repeatable on SCHEMA | OBJECT | FIELD_DEFINITION

[SterlingChin]

The new GraphQL client is in open beta and fully supports the Oct. 21 spec. I was unable to reproduce the red squiggle on repeatable when copy/paste the code from above into the new client.