Expose join dates of individual members within organisations in group participations API #204
Description
https://api.w3.org/groups/{type}/{shortname}/participations exposes group participants.
Participants are either individuals or organisations.
https://api.w3.org/participations/{participation} exposes, e.g.:
"created": "2023-02-27 13:21:51"
If an organisation has multiple individuals participating, the API does not reveal when each individual joined. Only the organisation's participation date is visible. This is in contrast to individual participants not affiliated with organisations have their join date exposed.
Proposal: Have the API expose the join date of each individual part of an organisation participating in a group.