Creates a contract line from a template. The template id is taken from the path `{id}` (it takes precedence over any template_id in the body), and the rest of the body is validated with createPlanFromTemplateSchema. Authenticated and tenant-scoped via withApiKeyRouteAuth.
Content type: application/json · schema CreateContractLineFromTemplateBody
Success response 201 · schema ContractLineApiSuccess
true