Drupal REST / cURL / invoices content type

As a pre-requisite you need your own (test) installation of (latest) Drupal available online. Keep the default Drupal theme. 1. In Drupal configure a new content type "Invoice" having the following structure / fields no - type string(50) date - type date product - type string(50) fees - type money customer_name - type string(256) customer_address - type string(256) 2. Then write a very simple Drupal PHP front-end template [login to view URL] to view the individual invoice details (for layout details see the attached [login to view URL]) 3. The individual Invoice permalink should be configurable - for instance /invoices/{{no}} 3. Expose the new "Invoice" content type to be available through the RESTful Web Services API - [login to view URL] 4. The previous REST endpoint should respect the Drupal authorization mechanism (it should not be possible to use this REST interface and create/delete invoices without providing correct user and password) 5. Test - Use cURL - [login to view URL] and create 5 different invoices using the previously configured Invoice REST API - [login to view URL] ==> Make sure you get the 5 invoices correctly created in the Drupal back-end. Visualize the invoices in the front-end. 6. To the maximum extent possible try to achieve the solution without installing any additional Drupal plug-in. If possible try to get the solution implemented on a plain vanilla (latest) Drupal 8 having the default Drupal theme. If you need to install any custom plug-in then clearly document which plug-ins were installed and which are the provided extra capabilities. The delivery of this project should be a document with the detailed steps to follow for achieving the solution. The solution should contain 1. the steps to define the new Invoice content type + 2. the [login to view URL] template code to view invoices + 3. how to configure the Invoice permalink + 4. how to publish the new Invoice content type to be manipulated through the Drupal REST 5. which is the cURL command to create new invoices through REST - The cURL command should contain the user / password for authorization purposes. If wrong user / password are provided then the cURL command should fail.