add api to get protocol version (for version check in the future)

platforms/bungeecord/src/main/java/us/ajg0702/queue/platforms/bungeecord/players/BungeePlayer.java

@@ -124,6 +124,11 @@ public class BungeePlayer implements AdaptedPlayer, Audience {
         handle.connect(((BungeeServer) server).getHandle());
     }
 
+    @Override
+    public int getProtocolVersion() {
+        return handle.getPendingConnection().getVersion();
+    }
+
     @Override
     public String getName() {
         return handle.getName();