WC <-> Square Bookable product improvements

Currently only simple products sync to square.

I’d like to be able to create bookable products in Woocommerce and have the product created in square (can be with just the base price) when synch occurs. I’ve made sure the product has an SKU and image and it still fails currently.

Also when doing a Square -> WC sync, the product type should not be reset to simple product! (for now I just disable syncing to prevent this on individual products).