Data dump / API / Items update status

[Dimillian]

This is an issue I want to keep open and updated, because it's quite hard to keep up to date with the data and how / what / when I'm updating items data from the API and put it inside the app.

Latest: 99e6eb1

NookPlaza grouped houseware, art, miscellaneous and wall-mounted into one furnitures endpoint. It also change a bit the JSON response.
I've been able to import it only for Furnitures (the most important, changing data as game update). The only change in our Item Codable object is that obtainedFrom is now an array instead of a String. So from the source JSON i've renamed obtainedFrom to obtainedFromNew and we have both properties in our Item model for "old" items and new items.
Once I'll migrate all categories / endpoint I'll be able to remove the obtainedFrom completely and keep only the new one as an optional to allow legacy items in UserCollection to still be decoded.