So that the new search service can respond to events such as an edition on LSST the Docs being updated, or a new product being created, we want to integrate LSST the Docs with Roundtable's SQuaRE Events. Events, which is Kafka-based, is the main system for event-driven service coordination in Roundtable. The excepted outcomes are:

Given that LTD Keeper is Flask based, I think it makes sense to have the integration with SQuaRE Events as a separate microservice. This allows LTD Keeper to focus on maintaining the DB and service its REST API. Thus LTD Events will a microservice that integrates both SQuaRE Events and LTD Keeper.

1. Create an "ltd-indexer service based on the roundtable_aiohttp_bot template.
2. Receive posts from ltd-keeper (i.e. a webhook) indicating that an edition is updated (via an internal in-cluster endpoint)
3. Add this webhook functionality to LTD Keeper
4. Send a Kafka message on SQuaRE events indicating an edition is updated.