[Feature] Enable bazaar window 'Find Trader' functionality (#4560)

* First pass to enable trader 'Find Trader' functionality

* Move SendBulkTraders out of zoning routines and send as part of the opening of the bazaar search window.
Add zone instance to SendBulkTraders to support multi-instanced bazaars.

zone/client_packet.cpp

@@ -912,10 +912,6 @@ void Client::CompleteConnect()
 		CastToClient()->FastQueuePacket(&outapp);
 	}
 
-	if (ClientVersion() >= EQ::versions::ClientVersion::RoF) {
-		SendBulkBazaarTraders();
-	}
-
 	// TODO: load these states
 	// We at least will set them to the correct state for now
 	if (m_ClientVersionBit & EQ::versions::maskUFAndLater && GetPet()) {
@@ -3921,6 +3917,10 @@ void Client::Handle_OP_BazaarSearch(const EQApplicationPacket *app)
 			SendBazaarWelcome();
 			break;
 		}
+		case FirstOpenSearch: {
+			SendBulkBazaarTraders();
+			break;
+		}
 		default: {
 			LogError("Malformed BazaarSearch_Struct packet received, ignoring\n");
 		}