Battle Item Refactor (#2902)

* items that can be used in battle now use battlescripts
* removed ExecuteTableBasedItemEffect_
* taught AI how to use items, removed AI_itemtype/flag
* X-Items store stages raised in holdEffectParam
* USE_ITEM in tests

asm/macros/battle_script.inc

@@ -1330,6 +1330,22 @@
 	.4byte \jumpInstr
 	.endm
 
+	.macro itemrestorehp
+	callnative BS_ItemRestoreHP
+	.endm
+
+	.macro itemcurestatus
+	callnative BS_ItemCureStatus
+	.endm
+
+	.macro itemincreasestat
+	callnative BS_ItemIncreaseStat
+	.endm
+
+	.macro itemrestorepp
+	callnative BS_ItemRestorePP
+	.endm
+
 @ various command changed to more readable macros
 	.macro cancelmultiturnmoves battler:req
 	various \battler, VARIOUS_CANCEL_MULTI_TURN_MOVES