[Merchants] Add New Classic Greed/Faction/Charisma Prices Rule (#4301)

* [Merchants] Add New Classic Greed/Faction/Charisma Prices Rule

* Fix size of greed field.

* Fix { formatting and add {} to one liners

* Fix return type of GetGreedPercent

* Remove code that slipped in from another patch

* Fix greed to be unsigned

* Update client.cpp

* Update client_packet.cpp

* Update client.cpp

Fix bad name in extra log message added manually from merge.

* Update client_packet.cpp

Spacing.

* Update client.cpp

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Co-authored-by: Kinglykrab <kinglykrab@gmail.com>

zone/zonedb.cpp

@@ -1793,6 +1793,7 @@ const NPCType *ZoneDatabase::LoadNPCTypesData(uint32 npc_type_id, bool bulk_load
 		t->max_dmg            = n.maxdmg;
 		t->attack_count       = n.attack_count;
 		t->is_parcel_merchant = n.is_parcel_merchant ? true : false;
+		t->greed              = n.greed;
 
 		if (!n.special_abilities.empty()) {
 			strn0cpy(t->special_abilities, n.special_abilities.c_str(), 512);