fix(inventory): write is_bound, inventory_type and NPC item slots like live

Equipped items in the inventory component construction, as live wrote
them (49,534 equipped items in the captures):
- is_bound is the item's bound state (false for 2,990 items that bind
  neither way); DLU always wrote true. NPC items are bound when the item
  binds on pickup or on equip (2,640 of 2,640).
- inventory_type is the item's inventory, left out for ITEMS: TempEquip for
  temporary equips and proxies (3,899), Model for models (232). DLU never
  wrote it. DLU keeps player proxies in ITEM_SETS; they are sent as
  TEMP_ITEMS, like live.
- An NPC item's slot is its slot in the inventory it would be in: models
  count from 0 in MODELS and proxies from 0 in TEMP_ITEMS, so a proxy no
  longer takes the next ITEMS slot (1,475 of 1,491 NPC constructions match;
  DLU's numbering matched 1,352).
- equipped_model_transforms is an empty list on every construction (11,214
  of 11,214); DLU wrote none.

Test: InventoryConstructionTest.NpcItemsLikeLive (NPCs 7426 and 13790 from
the captures), InventoryConstructionTest.PlayerItemsLikeLive.

Check in game: NPCs with gear (Numb Chuck in FV, the Ninjago ninjas, faction
vendors) show all their gear; your own and other players' equipped items,
proxies (ninja hoods, capes) and temporary equips (Maelstrom vacuum, quest
items) show normally after zoning and after equipping/unequipping.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

dGame/dInventory/EquippedItem.h

@@ -2,6 +2,7 @@
 
 #include "dCommonVars.h"
 #include "LDFFormat.h"
+#include "eInventoryType.h"
 
 /**
  * An item that's equipped, generally as a smaller return type than the regular Item class
@@ -32,4 +33,15 @@ struct EquippedItem
 	 * The configuration of the item with any extra data
 	 */
 	LwoNameValue config = {};
+
+	/**
+	 * Whether the item is bound to its owner (the construction's is_bound)
+	 */
+	bool bound = true;
+
+	/**
+	 * The inventory the item is in (the construction's inventory_type): TEMP_ITEMS for temporary equips and
+	 * proxies, MODELS for models, ITEMS for the rest
+	 */
+	eInventoryType inventoryType = ITEMS;
 };