Add an option to restore closed store

This would be a quality of life change that would remember the items in your FM store and their listed price, so that when you store closed, you could simply open a new one, and get an option to restore the last store you had open. This would only work if your items were still stored with Frederick and not yet collected. It's annoying to have to setup a new store and make space in my inventory/try to remember what prices I had listed for all my items, so this would make life much easier.