Hook API endpoints into the DataStore (front-end)

[louwie17]

We should make use of the new REST endpoints created on our server so we can persist the data on refresh.
We can replace the use of the localStorage use in the datastore with using the REST endpoint instead.

Gutenberg has a handy npm package for this called api-fetch, more documentation on how to install and use is here.

As part of this you could create a simple component that fetches all the products on load and displays either the number of created items, or a list with the title of each product.

Make use of the Promise structure first .then(...
After doing this method try out the async/await way

Acceptance criteria

• Saving a new product should use the new REST api created in Create product rest endpoints #5
• User should be able to refresh the page and notice how many products have been already created.