Support of Schema directives

I have a question.
[Schema directives](https://www.apollographql.com/docs/graphql-tools/schema-directives.html) are supported already, or will be supported?

Start with the linked Apollo schema-directives documentation and inspect the repository's existing schema and directive handling. The issue does not name an entry point, test, desired behavior, or acceptance criteria, so define the supported directive scope and corresponding tests before implementation.

Scritto dal modello di indicizzazione a partire dal testo della issue.