* feat: add protocol buffers for events
* chore: add EventDispatcher
* chore: add WebhookEvent class
* chore: emit events
* feat: initial version of event listener
* chore: emit user plan change with new timestamp
* feat: emit metrics + add alias status to create event
* chore: add newrelic decorator to functions
* fix: event emitter fixes
* fix: take null end_time into account
* fix: avoid double-commits
* chore: move UserDeleted event to User.delete method
* db: add index to sync_event created_at and taken_time columns
* chore: add index to model
* Accounts to be scheduled to be deleted cannot receive emails or login
* Create model and create migration for user
* Add test for the cron function
* Move logic to one place
* Use the class name to call the static delete method
