feat: add version to update menu

include/misc/Updater.h

@@ -16,6 +16,7 @@ private:
     bool m_FileWrited;
     bool m_CancelDownload;
     DataBuffer m_FileBuffer;
+    std::string m_LastVersion;
 public:
     Updater() : m_Progress(0), m_DownloadComplete(false), m_FileWrited(false), m_CancelDownload(false) {}
 
@@ -32,6 +33,11 @@ public:
     
     static std::string getLocalFilePath();
     static void removeOldFile();
+
+    static std::string getCurrentVersion(){ return TD_VERSION; }
+    std::string getLastVersion() { return m_LastVersion; }
+
+    bool canUpdate();
 private:
     std::string getDownloadFileURL();
 };