As a Product Manager, I want to know how the infobox feature is used by customers,
so that I can make data-driven product decisions.

We want to track the following product metrics:

• Track the number of articles without InfoBox
• Track list of articles without InfoBoxes. Differentiate between null and empty (include project and version_identifier as labels).
• Track the count of the number of infoboxes per page (sometimes one article can have many infoboxes, does not happen often) (hint use the length of the infobox array)
• Track the number of rows per infobox (if the number of rows is low 1-3, then there is a worry that we're not parsing the infobox correctly) (hint use the length of the infobox child hasParts array)

TO DO

1. Naming conventions for metrics
2. Define custom metrics
3. Expose in Prometheus
4. grafana dashboard

Acceptance criteria

• Metrics exposed via Grafana