feat: add updater

include/render/gui/UpdateMenu.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "GuiWidget.h"
+
+#include "misc/Updater.h"
+
+#include <future>
+
+namespace td {
+namespace gui {
+
+class UpdateMenu : public GuiWidget {
+private:
+    bool m_Opened;
+    std::string m_Error;
+    utils::Updater m_Updater;
+    std::shared_future<bool> m_UpdateAvailable;
+public:
+    UpdateMenu(client::Client* client);
+
+    virtual void render();
+private:
+    void checkUpdates();
+    bool isUpdateChecked();
+    void renderErrorPopup();
+};
+
+} // namespace gui
+} // namespace td