Add a layout config only if your page has custom layout
https://sap.github.io/cloud-commerce-spartacus-storefront-docs/page-layout/#configuring-the-layout可以用SAP Spartacus 預設的layout配置，或者自定義。
3.Implement Angular CMS components that should appear on this page and configure mapping from CMS component type to the implementation
https://sap.github.io/cloud-commerce-spartacus-storefront-docs/customizing-cms-components/#page-