feat: Allow overriding the executor used to GraphQLInterpreter

[frekw]

No description provided.

[frekw]

I think we can exclude this one if we want to.

[ghostdogpr]

While this is OK, I'm curious if you are able to implement what you needed with an ExecutionWrapper. If you are, I'd rather not add this until someone actually need it.

[frekw]

I think I'll be able to, but haven't been able to test enough due to #1136. Will get back to you that asap tomorrow 😅

[frekw]

@ghostdogpr it worked great!

I could basically do this

def apply[R](
    schema: __Schema
  ): GraphQL[R] = {
    val builder = RootSchemaBuilder(
      query = Some(Operation[R](schema.queryType, Step.NullStep)),
      mutation = schema.mutationType.map(mt => Operation[R](mt, Step.NullStep)),
      subscription = None
    )

    new GraphQL[R] {
      protected val additionalDirectives: List[__Directive]            = schema.directives
      protected val schemaBuilder: caliban.schema.RootSchemaBuilder[R] = builder
      protected val wrappers: List[caliban.wrappers.Wrapper[R]]        = List()
    }
  }

to get a schema without resolvers and then just wrap that up with an ExecutionWrapper! 👍 👏