重构网络管理，移除TCPClient和TCPServer类，整合多路复用功能，优化连接管理和数据传输逻辑

net/tcp_server.h

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <boost/asio.hpp>
+#include <memory>
+#include <vector>
+#include <string>
+#include <thread>
+#include <mutex>
+#include <unordered_map>
+#include <isteamnetworkingsockets.h>
+#include <isteamnetworkingutils.h>
+#include <steamnetworkingtypes.h>
+#include "multiplex_manager.h"
+
+class SteamNetworkingManager;
+
+using boost::asio::ip::tcp;
+
+// TCP Server class
+class TCPServer {
+public:
+    TCPServer(int port, SteamNetworkingManager* manager);
+    ~TCPServer();
+
+    bool start();
+    void stop();
+    void sendToAll(const std::string& message, std::shared_ptr<tcp::socket> excludeSocket = nullptr);
+    void sendToAll(const char* data, size_t size, std::shared_ptr<tcp::socket> excludeSocket = nullptr);
+    int getClientCount();
+    MultiplexManager* getMultiplexManager() { return multiplexManager_.get(); }
+
+private:
+    void start_accept();
+    void start_read(std::shared_ptr<tcp::socket> socket, std::string id);
+
+    int port_;
+    bool running_;
+    boost::asio::io_context io_context_;
+    boost::asio::executor_work_guard<boost::asio::io_context::executor_type> work_;
+    tcp::acceptor acceptor_;
+    std::vector<std::shared_ptr<tcp::socket>> clients_;
+    std::mutex clientsMutex_;
+    std::thread serverThread_;
+    SteamNetworkingManager* manager_;
+    std::unique_ptr<MultiplexManager> multiplexManager_;
+};