Product Badges: Multiple badges for Sold Out products#395

Currently, sold out products can only show one badge - the ‘Sold Out’ badge. We have some products that are sold out and also returning soon, and would like to show a custom ‘Returning Soon’ badge alongside the ‘Sold Out’ badge. We have other products that are sold out that we want to remain on the site for a period of time before archiving (for search, marketing, review purposes), hence why 2 badges on some sold out products would be great to differentiate which ones are returning and which ones are not.