This commit improves forums and forum posts list views. The changes are listed
below.
Forums list view:
- optional hidden `total_answers` and `total_favorites`
- added `slide_channel_id` and `visibility` fields
- added sum for `total_posts` and `total_views`
Forum posts list view:
- added badge widget on `state` field for better decoration
- added sum for `views` and `child_count`, updated their label to
'# Views' and '# Answers'
- removed `favourite_count` field
- moved `website_id` field at last as optional hidden
- added title for the demo data in which title was missing.
TaskID-2607467
Part-of: odoo/odoo#76930