Continue swarm support with multiple participants - Missing features

1. Add members
2. Kick members (if admin)
3. Edit conversation's profile (avatar/title/description)
4. Show conversation's profile
5. Show profile for conversation's requests
6. Edit message (in review)
7. Synchronize conversation's preferences with other clients (conversation's color, emoji)
8. Start a swarm (be able to set a profile while creating)

Later: 9. Call in swarm (review)