Consider refactoring signInWithPassword mutation to return a pure Token type.

[zorn]

As I'm working on the authentication support in the GraphQL API, I am vaguely encouraged by Ash to add a query like this:

  graphql do
    type :user

    queries do
      # ...

      read_one :sign_in_with_password, :sign_in_with_password do
        as_mutation? true
        type_name :user_with_metadata
      end
    end

    # ...
  end

This results in a GraphQL response type of UserWithMetadata, which feels awkward. I'd almost rather it just return the token and have a Token be a return type.

Not going to follow up on this just yet. Would rather get something working with the defaults and then reconsider, but wanted to document my notes.