add previous and next buttons (lectures are separate from assignments/quizzes/pages)

src/app/course/[courseName]/hooks/useItemNavigation.ts

@@ -0,0 +1,14 @@
+import { useOrderedCourseItems } from "./useOrderedCourseItems";
+import { getNavigationLinks, CourseItemType } from "./navigationLogic";
+
+export function useItemNavigation(
+  type: CourseItemType,
+  name: string,
+  moduleName?: string
+) {
+  const { orderedItems, orderedLectures } = useOrderedCourseItems();
+
+  const list = type === "lecture" ? orderedLectures : orderedItems;
+
+  return getNavigationLinks(list, type, name, moduleName);
+}