feat: Implement sharing functionality for CidUserExam attempts, including user management and sharing settings

Co-authored-by: Copilot <copilot@github.com>

atlas/urls.py

@@ -752,4 +752,25 @@ urlpatterns = [
         name="linked_cases_overview",
     ),
     path("cases/by_size", views.cases_by_size, name="cases_by_size"),
+    # Sharing
+    path(
+        "exam/<int:pk>/sharing",
+        views.collection_exam_sharing_panel,
+        name="collection_exam_sharing_panel",
+    ),
+    path(
+        "exam/<int:pk>/sharing/user-search",
+        views.collection_exam_user_search,
+        name="collection_exam_user_search",
+    ),
+    path(
+        "collection/shared-with-me",
+        views.collection_shared_with_me,
+        name="collection_shared_with_me",
+    ),
+    path(
+        "exam/<int:cid_user_exam_pk>/attempt-overview",
+        views.collection_shared_attempt_overview,
+        name="collection_shared_attempt_overview",
+    ),
 ]