Enables authorizations to be defined on GraphQL Types.

    module Types
      class ProjectType < BaseObject
        authorize :read_project
      end
    end

If a field has authorizations defined on it, and the return type of the
field also has authorizations defined on it. then all of the combined
permissions in the authorizations will be checked and must pass.

Connection fields are checked by "digging" to find the type class of the
"node" field in the expected location of edges->node.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/54417