* chore: add assignee avatar in cycle endpoint
* dev: update the structure to return avatar and firstname
* dev: return distinct users
* dev: update the structure to return id
* dev: update the prefetch queryset to distinct by id
* dev: remove id from distinct
* dev: add unique condition
* feat: cycle favourites for user
* chore: update nomenclature
* chore: update on nomenclature
* feat: add favorites for completed and current cycle endpoints