added access variable to exams soo we can distinguish private, public and confidential exams and also bugfixes and improvements

src/pages/(admin)/Lists/index.tsx

@@ -4,7 +4,6 @@ import clsx from "clsx";
 import CodeList from "./CodeList";
 import DiscountList from "./DiscountList";
 import ExamList from "./ExamList";
-import GroupList from "./GroupList";
 import PackageList from "./PackageList";
 import UserList from "./UserList";
 import { checkAccess } from "@/utils/permissions";