Enable `inheritance_enabled` option for `Elasticsearch::Model` gem
The following discussion from !7618 (merged) should be addressed:
I'm somewhat humbled to learn this: https://github.com/elastic/elasticsearch-rails/tree/master/elasticsearch-model#settings
Elasticsearch::Model.settings[:inheritance_enabled] = true
Perhaps one for a follow-up or separate issue?
We should first decide whether we should rip out elasticsearch-rails and write our own interface, though