ge: add trade seq number

Occasionally the trades are delivered out of order, this allows us to reassemble them in the correct order

http-service/src/main/java/net/runelite/http/service/ge/GrandExchangeController.java

@@ -103,6 +103,7 @@ public class GrandExchangeController
 		trade.setIp(request.getHeader("X-Forwarded-For"));
 		trade.setUa(request.getHeader("User-Agent"));
 		trade.setWorldType(grandExchangeTrade.getWorldType());
+		trade.setSeq(grandExchangeTrade.getSeq());
 
 		String json = GSON.toJson(trade);
 		try (Jedis jedis = redisPool.getResource())

http-service/src/main/java/net/runelite/http/service/ge/Trade.java

@@ -46,4 +46,5 @@ class Trade
 	private String ip;
 	private String ua;
 	private WorldType worldType;
+	private int seq;
 }