Refactor Steam Networking Components

- Removed SteamMessageHandler class and its implementation files.
- Integrated control packet handling directly into the SteamMessageHandler.
- Updated TCPClient and TCPServer classes to improve connection management and error handling.
- Added SteamNetworkingManager class to manage Steam networking, including lobby creation and connection handling.
- Implemented callbacks for Steam Friends and Matchmaking to handle lobby events.
- Enhanced message forwarding logic between TCP clients and Steam connections.
- Introduced control packet handling for ping responses.
- Improved thread safety with mutexes for shared resources.

steamnet/steam_message_handler.h

@@ -0,0 +1,42 @@
+#ifndef STEAM_MESSAGE_HANDLER_H
+#define STEAM_MESSAGE_HANDLER_H
+
+#include <vector>
+#include <map>
+#include <mutex>
+#include <thread>
+#include <memory>
+#include <boost/asio.hpp>
+#include <steamnetworkingtypes.h>
+#include "tcp_server.h"
+#include "tcp/tcp_client.h"
+#include "control_packets.h"
+
+class SteamMessageHandler {
+public:
+    SteamMessageHandler(boost::asio::io_context& io_context, ISteamNetworkingSockets* interface, std::vector<HSteamNetConnection>& connections, std::map<HSteamNetConnection, std::shared_ptr<TCPClient>>& clientMap, std::mutex& clientMutex, std::mutex& connectionsMutex, std::unique_ptr<TCPServer>& server, bool& g_isHost, int& localPort);
+    ~SteamMessageHandler();
+
+    void start();
+    void stop();
+
+private:
+    void run();
+    void pollMessages();
+    void handleControlPacket(const char* data, size_t size, HSteamNetConnection conn);
+
+    boost::asio::io_context& io_context_;
+    ISteamNetworkingSockets* m_pInterface_;
+    std::vector<HSteamNetConnection>& connections_;
+    std::map<HSteamNetConnection, std::shared_ptr<TCPClient>>& clientMap_;
+    std::mutex& clientMutex_;
+    std::mutex& connectionsMutex_;
+    std::unique_ptr<TCPServer>& server_;
+    bool& g_isHost_;
+    int& localPort_;
+
+    std::thread thread_;
+    bool running_;
+};
+
+#endif // STEAM_MESSAGE_HANDLER_H