In this commit we have improved the attendees list
view, changes done are listed below,
- We have changed the cancel button
color to red in attendees list view.
- We have added badge widget for the
state field in attendees list view, the following
states uses these colors,
- draft - blue
- cancel - grey
- open - blue
- done - green
- We have added a `activity_ids` before the field `state`
field in attendees list view.
- We have added the field `registration_answer_ids` with
`many2many_tags` and default hide in attendees list view
just before the status field.
TaskID-2670765
Part-of: odoo/odoo#79166
ijas ahammed
bf0bb8497e