Add new attributes to campaign

[skoudoro]

Need to add campaign sent attributes in a Campaign object

response example of the campaign sent:

{'id': 42706640, 'total_recipients': 0, 'type': 'regular', 'extra_type': None, 'name': 'Regular campaign name', 'status': 'draft', 'step': 3, 'send_rule': None, 'opened': {'count': None, 'rate': None}, 'clicked': {'count': None, 'rate': None}, 'followup_info': {'send_type': 'regular', 'followup_send_type': None}, 'ab_info': {'send_type': 'regular', 'ab_win_type': None}, 'date_created': '2021-10-18 14:08:49', 'date_send': '2021-10-18 14:08:00', 'date_end': None, 'mail': {'id': 45258518, 'date': '2021-10-18 14:08:49', 'subject': 'Regular campaign subject', 'code': 'v4u1v8', 'from': '[email protected]', 'from_name': 'Demo API v2', 'url': 'regular-campaign-subject-45258518', 'send_date': '2021-10-18 14:08:00', 'host': 'mailerlite.com', 'type': 'template', 'screenshot': 'https://static.mailerlite.com/images/newsletter_screenshot2.png', 'screenshot_big': 'https://static.mailerlite.com/images/newsletter_screenshot2.png', 'updated': '2021-10-18 11:08:51', 'language': {'code': 'en', 'title': 'English'}, 'groups': [{'id': 2984475, 'name': 'Asmeniniai', 'total': 6, 'active': 6, 'unsubscribed': 0, 'bounced': 0, 'unconfirmed': 0, 'junk': 0, 'sent': 241, 'opened': 74, 'clicked': 40, 'ordering': 34, 'updating': 0, 'user_id': 0, 'date': '2015-12-16 15:43:46', 'updated': '2020-07-07 16:44:57'}, {'id': 3237221, 'name': 'Gumroad', 'total': 0, 'active': 0, 'unsubscribed': 0, 'bounced': 0, 'unconfirmed': 0, 'junk': 0, 'sent': 83, 'opened': 52, 'clicked': 24, 'ordering': 30, 'updating': 0, 'user_id': 0, 'date': '2016-02-03 10:33:01', 'updated': '2020-07-07 16:44:57'}]}, 'mails': [{'id': 45258518, 'date': '2021-10-18 14:08:49', 'subject': 'Regular campaign subject', 'code': 'v4u1v8', 'from': '[email protected]', 'from_name': 'Demo API v2', 'url': 'regular-campaign-subject-45258518', 'send_date': '2021-10-18 14:08:00', 'host': 'mailerlite.com', 'type': 'template', 'screenshot': 'https://static.mailerlite.com/images/newsletter_screenshot2.png', 'screenshot_big': 'https://static.mailerlite.com/images/newsletter_screenshot2.png', 'updated': '2021-10-18 11:08:53'}], 'includes_survey': False, 'has_ecommerce': False, 'report_date': None}