feat(examples): route app and admin URLs

examples/example_project/urls.py

@@ -0,0 +1,9 @@
+"""Root URL configuration for the example project."""
+
+from django.contrib import admin
+from django.urls import include, path
+
+urlpatterns = [
+    path("admin/", admin.site.urls),
+    path("", include("payments.urls")),
+]