feat: add campaign copying scheduling and residual handling

src/govoplan_campaign/backend/router.py

@@ -8,6 +8,7 @@ from govoplan_campaign.backend.routes.delivery import router as delivery_router
 from govoplan_campaign.backend.routes.jobs import router as jobs_router
 from govoplan_campaign.backend.routes.operations import router as operations_router
 from govoplan_campaign.backend.routes.reports import router as reports_router
+from govoplan_campaign.backend.routes.schedules import router as schedules_router
 from govoplan_campaign.backend.routes.sharing import router as sharing_router
 from govoplan_campaign.backend.routes.versions import router as versions_router
 
@@ -19,6 +20,7 @@ for workflow_router in (
     versions_router,
     jobs_router,
     reports_router,
+    schedules_router,
     sharing_router,
     delivery_router,
     attachments_router,