We're actively rethinking how we categorize all Elastic Agent integrations. Part of this reimagining includes devising a category + subcategory organization structure for certain integrations (e.g. security) with more nuanced structure than a single category can provide.

We'll need to support integrations defining a top-level category as well as an optional subcategory. This means updating the rules around categories for each package's spec, as well as the logic that drives the https://epr.elastic.co/categories API.

We'll need to add support for the new structure in Kibana, but that will be a separate issue referenced later.