Create a new group in the user’s account.
Requires authenticated user (usually admin, but enforced via permissions logic if needed). For now, any authenticated user can create groups in their account (or restrict to admin).
Successful Response
Schema for detailed group response including users.
Group name
1 - 100Group ID
Account ID (UUID)
Human-readable account code in XX#### format (e.g., AB1234)
Group description
500Number of users in the group
List of users in the group