Allow Hudu Bridge Users to Be Assigned to Multiple Groups or Custom Groups

Currently, users who access Hudu via Hudu Bridge are automatically assigned to the Hudu Bridge group on every login. This group assignment takes priority and overrides any other group memberships, which limits flexibility in permission management.

Please add functionality that allows administrators to:

1. Assign Hudu Bridge users to multiple groups, and

2. Optionally allow specific users to be assigned to custom groups instead of (or in addition to) the automatically assigned Hudu Bridge group