added costs

app/costs/urls.py

@@ -0,0 +1,15 @@
+from django.urls import path
+
+from .views import (
+    costs_all,
+    costs_create,
+    costs_edit,
+    costs_delete,
+)
+
+urlpatterns = [
+    path("all/", costs_all, name="costs_all"),
+    path("create/", costs_create, name="costs_create"),
+    path("edit/<id>", costs_edit, name="costs_edit"),
+    path("delete/<id>", costs_delete, name="costs_delete"),
+]