This PR improves the search on livechat session's history:
- Rename "Name" into "Attendee"
- Add quick filters:
- My sessions
- My Team
- Session Date
- Ratings: Good / Bad / Unrated
- Rename "Creation Date" into "Session Date"
At the same time, this PR fixes the livechat channel demo
data since they were not realistic:
- Older messages should have lower ids
- Operators should be members of the channel
- Rating must be the last message of the channel
- Missing `email_from` for visitor messages
part of task-3332872
closesodoo/odoo#125891
Signed-off-by: Didier Debondt (did) <did@odoo.com>