🥔✨ `Marketplace`: Removing `DeliveryAreas`

[zspencer]

• https://github.com/zinc-collective/convene/issues/1136

For delivery areas that are associated with an order, we would ideally have a way to "archive" that delivery area, so that it no longer shows up as an option for customers. @anaulin - https://github.com/zinc-collective/convene/issues/2013#issuecomment-1848777191

I think adding adding an Archive (or Deactivate?) feature to DeliveryArea that clears Carts with the DeliveryArea is a great next step; and then if an Archived DeliveryArea has no Orders then we let it be deleted. @zspencer - https://github.com/zinc-collective/convene/issues/2013#issuecomment-1849079376

• [x] DeliveryArea without Orders may be Removed
• [x] DeliveryArea with `Orders may not be Removed
• [x] Removing DeliveryArea without Orders and with Carts disassociates the Cart from the DeliveryArea
• [x] DeliveryArea may be #archived, even if they have Orders
• [x] Archiving DeliveryAreas dissaociates Carts from the DeliveryArea
• [ ] :archived DeliveryAreas may be #restored

Bugs

• [x] https://github.com/zinc-collective/convene/issues/2013

[anaulin]

FWIW, I've not hated using this gem for "archiving" or other soft-deleting: https://github.com/jhawthorn/discard