Add SKU to orders list page

yes, I will look in to this while I do the combability check / update for WordPress 5.7

I made it so the SKu is visible when hovering the product title. It is sometimes hard enough to have all info there when all columns are visible (shipping, billing, actions). Cramming the sku in there was to much.

You can now see the sku when hovering the product title in the product column when you are in the order screen.

Hope this works for you (and all other people)