Rewrote Ava's device handling

Rewrote the handling for both the accumulator and the attractor in new systems
Fixed a bug that would cause the devices to attract unwanted items at inappropriate times
Fixed a bug that prevented equip listeners from firing on login

Server/src/main/kotlin/api/ContentAPI.kt

@@ -2084,4 +2084,15 @@ fun clearHintIcon(player: Player) {
     val slot = getAttribute(player, "hinticon", -1)
     player.removeAttribute("hinticon")
     HintIconManager.removeHintIcon(player, slot)
+}
+
+/**
+ * Gets the equipment slot the item belongs to
+ * @param item the Id of the item to check
+ * @return the EquipmentSlot, or null if the item cannot be equipped, or has no slot defined.
+ */
+fun equipSlot(item: Int) : EquipmentSlot? {
+    return EquipmentSlot
+        .values()
+        .getOrNull(itemDefinition(item).getConfiguration(ItemConfigParser.EQUIP_SLOT, -1))
 }