As a data re-user I want to be able to receive and event in Realtime and Realtime Batch APIs when revision tags change, so that I can keep revision tags for the article up to date.

Acceptance criteria
New tags-change event being emitted when revision tags change.

Notes
This is a problem because tag updates to the revision don't trigger revision create event.

Things to consider

• We can use Event Stream Revision Tags Change stream
• More on tags
  • Manual:Tags
  • API:Tags
  • In API:RecentChanges update to tags property does not add a new entry (example of the RecentChanges request
• Important thing that this event can't be emitted before the update event for a certain revision
  • There's a possibility that someone creates a revision and then edits tags right away, that way we can't guarantee that our system will process the revision-create event faster than tag-chage

To-Do

• updates to event-bridge service
  • add new tagschange handler to the event-bridge service that will publish to aws.event-bridge.article-tags-change.v1 topic from Event Stream Revision Tags Change stream
    • make sure that this handler omits events to aws.event-bridge.article-tags-change.v1 topic
    • add new event-bdridge-tagschange handler to the IaC and update CI/CD piepelines
  • update ACLs for the aws.event-bridge.article-tags-change..v1 to allow event-bdridge-tagschange as publisher
• updates to structured-data service
  • add new articletags handler that will listen to aws.event-bridge.article-tags-change.v1 (do data enrichment TBD)
    • make sure that handler publishes to aws.structured-data.articles.v1 with event.type equal tags-change
    • need to make sure that it does not publish events for the same version.identfier faster than update (aricleupdate handler) events are emitted
    • data enrichment TBD (don't know the schema and values yet)
• updates to Realtime API
  • just need to update the schema submodule to the latest version if we do any schema changes along the way