[ADDED] - Added usergroup-based bodygroup/skin whitelist
You can now whitelist specific bodygroups and skins for individual usergroups (e.g., vip, admin, etc.)!
This new system gives you more control by allowing exclusive customization options for certain ranks.
It overrides the default whitelist; if a skin/bodygroup is listed for a usergroup, only members of that group can use it, even if it's whitelisted by default.
