List campaigns

curl --request GET \
  --url https://api.wazapin.com/v1/campaigns \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "created_at": "<string>",
      "audience_source_type": "<string>",
      "id": "<string>",
      "name": "<string>",
      "organization_id": "<string>",
      "status": "<string>",
      "updated_at": "<string>",
      "canceled_at": "<string>",
      "completed_at": "<string>",
      "description": "<string>",
      "audience_source_id": "<string>",
      "explicit_contact_ids": [
        "<string>"
      ],
      "failed_at": "<string>",
      "metadata": "<unknown>",
      "scheduled_at": "<string>",
      "started_at": "<string>"
    }
  ],
  "meta": {
    "has_more": true,
    "limit": 123,
    "cursor": "<string>",
    "offset": 123,
    "total": 123
  }
}