create and monitor MailerLite automations via the API (trigger/step configuration remains UI-only)

Steps

1. POST a name to https://connect.mailerlite.com/api/automations to create a new draft automation
2. List existing automations with GET /api/automations, optionally filtering by filter[enabled], filter[name], or filter[group]
3. Fetch one automation's full trigger/step tree with GET /api/automations/{automation_id}, which returns its triggers array (e.g. type: subscriber_joins_group) and steps (delay, email, condition)
4. Monitor per-subscriber progress with GET /api/automations/{automation_id}/activity, filtering by status (active, completed, canceled, failed)
5. Delete an automation with DELETE /api/automations/{automation_id}