Interfaces on InterfacesOct 2021

Allow interfaces to implement other interfaces. Added in the October 2021 edition.

More info: https://github.com/graphql/graphql-spec/pull/373

Projects

Project Name	Supported Since	Note
Apollo Client
Apollo Kotlin
Apollo Router
Apollo Server
Apollo iOS
Domain Graph Service (DGS) Framework
GraphQL Code Generator
GraphQL Java
GraphQL Kotlin
GraphQL Yoga
GraphQL.js
GraphiQL
Grats
Hive Gateway
Hot Chocolate
Relay
Spring for GraphQL
gql.tada
urql