[Feature] Organizer can add new participants
The organizer may be able to add new participants once the draw is done. In the organizer panel, they have a new button to do that. It opens the random form as in the index page with the participants already filled in and a new line. They can add as many more participants as they want. Each participant already in the draw have their data locked. The organizer cannot change remove their exclusions already defined before and might not be able to change their name (#80) nor email.
Once the participants are added, the organizer have 3 options:
- Ask all the previous participants to redraw (#79)
- If there's more than 2 new participants, organize a sub draw only in-between those new participants (and himself if they want to)
- Break the anonymity and organize the sub draw in-between those new participants (and himself if they want to and/or need to). If there's only one new participant, the organizer have to include themself.