Implement infinite arena

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

@@ -0,0 +1,28 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.InfinityTowerApply.InfinityTowerApplyReq;
+import emu.nebula.net.HandlerId;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.infinity_tower_apply_req)
+public class HandlerInfinityTowerApplyReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Template hanlder
+        var req = InfinityTowerApplyReq.parseFrom(message);
+        
+        // Apply
+        boolean success = session.getPlayer().getInfinityTowerManager().apply(req.getLevelId(), req.getBuildId());
+        
+        if (!success) {
+            return session.encodeMsg(NetMsgId.infinity_tower_apply_failed_ack);
+        }
+        
+        // Encode and send
+        return session.encodeMsg(NetMsgId.infinity_tower_apply_succeed_ack);
+    }
+
+}