[Feature] Implement OP_CashReward (#2307)

* Implement OP_CashReward

Tit opcode needs verifying still, I think it's correct.

Added Perl and lua client CashReward functions

* Forgot AddMoneyToPP call somehow

* Switch QuestManager::givecash to CashReward packet

* Fix extra comma

common/emu_oplist.h

@@ -71,6 +71,7 @@ N(OP_Camp),
 N(OP_CancelSneakHide),
 N(OP_CancelTask),
 N(OP_CancelTrade),
+N(OP_CashReward),
 N(OP_CastSpell),
 N(OP_ChangeSize),
 N(OP_ChannelMessage),