Search results of variation SKU code in WC and SKU column in orders page

Hi,

I'm looking to implement 2 things :
1. Be able to search (and display results) for variation SKU code in the WooCommerce orders listing page in admin
2. Add a SKU column in the WooCommerce orders listing page that displays the variation SKU code of product bought in each order.

Please have a look at this Loom that will help you better understand my needs : https://www.loom.com/share/dc07cbe3f1a943e9aa0eead27b7d3adc

Thanks.