Prepare the WikimediaCampaignEvents extension for deployment by completing the requirements listed in https://www.mediawiki.org/wiki/Writing_an_extension_for_deployment#Preparing_for_deployment:

Prerequisites: T347090: Fulfill prerequisites for deployment of the WikimediaCampaignEvents extension

• Create a production deployment tracking task within Phabricator
  • This very task, also see the task graph (and specifically, T347894 for beta and T347909 for production)
• Request and incorporate feedback from the following reviews:
  • A security readiness review (T350900)
  • A performance review (T350947) - request only; will start after the beta deployment (T347894)
  • A database review (T350906)

Then: T347894: Deploy the WikimediaCampaignEvents extension to the Beta Cluster