feat(content): December 2023 Content (#15023)

* feat(content): add December subscriber items, backgrounds, and enchanted armoire

* feat(content): correct item slot for armoire, change release dates for testing

* fix(backgrounds): correct start date

* fix(armoire): Add canonical start date

* fix(test): only count released items

---------

Co-authored-by: Sabe Jones <sabrecat@gmail.com>
Co-authored-by: SabreCat <sabe@habitica.com>

test/common/ops/buy/buyArmoire.js

@@ -17,9 +17,9 @@ function getFullArmoire () {
 
   _.each(content.gearTypes, type => {
     _.each(content.gear.tree[type].armoire, gearObject => {
-      const armoireKey = gearObject.key;
-
-      fullArmoire[armoireKey] = true;
+      if (gearObject.released) {
+        fullArmoire[gearObject.key] = true;
+      }
     });
   });