feat(Core/DB): split debug command RBAC into three permission tiers (#25882)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

src/server/game/Accounts/RBAC.h

@@ -681,6 +681,8 @@ enum RBACPermissions
     RBAC_PERM_COMMAND_RESPAWN_GAMEOBJECT_GUID                = 917,
     RBAC_PERM_COMMAND_RESPAWN_CREATURE_ENTRY                 = 918,
     RBAC_PERM_COMMAND_RESPAWN_GAMEOBJECT_ENTRY               = 919,
+    RBAC_PERM_COMMAND_DEBUG_INFO                             = 920,
+    RBAC_PERM_COMMAND_DEBUG_COSMETIC                         = 921,
     // custom permissions 1000+
     RBAC_PERM_MAX
 };