Identified the Target Ring fields for RoF/RoF2 and added a perl accessor for the last target ring position received from the client.

Usage: $client->GetTargetRingX(), $client->GetTargetRingY(), $client->GetTargetRingZ()

common/patches/rof.cpp

@@ -4236,6 +4236,10 @@ namespace RoF
 		//IN(inventoryslot);
 		IN(target_id);
 
+		IN(y_pos);
+		IN(x_pos);
+		IN(z_pos);
+
 		FINISH_DIRECT_DECODE();
 	}