Provide official ListPingHandler implementation

server/server.go

@@ -1,3 +1,25 @@
+// Package server provide a minecraft server framework.
+// You can build the server you want by combining the various functional modules provided here.
+// An example can be found in examples/frameworkServer.
+//
+// A server is roughly divided into two parts:
+//
+//	+----------------------------------------------+
+//	|           Go-MC Server Framework             |
+//	+-----------------------+----------------------+
+//	|         Gate          |       GamePlay       |
+//	+--------------+--------+--------+-------------+
+//	| LoginHandler | ListPingHandler | Coming Soon |
+//	+--------------+-----------------+-------------+
+//
+// Gate, which is used to respond to the client login request, provide login verification,
+// respond to the List Ping Request and providing the online players' information.
+//
+// Gameplay, which is used to handle all things after a player successfully logs in
+// (that is, after the LoginSuccess package is sent),
+// and is responsible for functions including player status, chunk management, keep alive, chat, etc.
+//
+// The implement of Gameplay will provide later.
 package server
 
 import "github.com/Tnze/go-mc/net"