rs-client: refactoring (#1344)

* Rename some things to be more consistent everywhere

* rs-client: refactoring

* MenuAction -> MenuOpcode merge

runescape-client/src/main/java/class267.java

@@ -15,6 +15,6 @@ public class class267 {
 	)
 	static final void method4986() {
 		Client.field849 = Client.cycleCntr;
-		GrandExchangeEvent.field49 = true;
+		GrandExchangeEvent.ClanChat_inClanChat = true;
 	}
 }