Implement gallery showcase

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

@@ -0,0 +1,23 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.PlayerBoard.PlayerBoardSetReq;
+import emu.nebula.net.HandlerId;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.player_board_set_req)
+public class HandlerPlayerBoardSetReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = PlayerBoardSetReq.parseFrom(message);
+        
+        // Set board
+        boolean success = session.getPlayer().setBoard(req.getIds());
+        
+        return this.encodeMsg(success ? NetMsgId.player_board_set_succeed_ack : NetMsgId.player_board_set_failed_ack);
+    }
+
+}