Implement friends list

src/main/java/emu/nebula/server/handlers/HandlerFriendDeleteReq.java

@@ -0,0 +1,24 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.FriendDelete.FriendDeleteReq;
+import emu.nebula.net.HandlerId;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.friend_delete_req)
+public class HandlerFriendDeleteReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = FriendDeleteReq.parseFrom(message);
+        
+        // Delete friend
+        boolean success = session.getPlayer().getFriendList().deleteFriend((int) req.getUId());
+        
+        // Encode and send
+        return session.encodeMsg(success ? NetMsgId.friend_delete_succeed_ack : NetMsgId.friend_delete_failed_ack);
+    }
+
+}