refactor(notifications): align app structure with backend conventions

apps/notifications/api/urls.py

@@ -0,0 +1,35 @@
+from django.urls import include, path
+from rest_framework.routers import DefaultRouter
+
+from apps.notifications.api import views
+
+router = DefaultRouter()
+router.register("box", views.NotificationListViewSet, basename="box")
+
+app_name = "notification"
+
+urlpatterns = [
+    path("", include(router.urls)),
+    path("list/", views.NotificationListView.as_view(), name="notifications"),
+    path("seen/", views.NotificationSeenView.as_view(), name="notifications-seen"),
+    path(
+        "stream-token/",
+        views.NotificationStreamTokenView.as_view(),
+        name="notifications-stream-token",
+    ),
+    path(
+        "stream/",
+        views.NotificationStreamView.as_view(),
+        name="notifications-stream",
+    ),
+    path(
+        "seen/all/",
+        views.NotificationMarkAllReadView.as_view(),
+        name="notifications-mark-read",
+    ),
+    path(
+        "<str:notif_id>/",
+        views.NotificationDeleteView.as_view(),
+        name="notifications-delete",
+    ),
+]