arch-8.x-1.x-dev/modules/product/arch_product.links.action.yml

product.type_add:
  route_name: product.type_add
  title: 'Add product type'
  title_context: arch_product
  appears_on:
    - entity.product_type.collection

product.add_page:
  route_name: product.add_page
  title: 'Add product'
  title_context: arch_product
  appears_on:
    - arch.dashboard
    - entity.product.collection
    - view.products.page