修改应用名称

int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
                      _In_ wchar_t *command_line, _In_ int show_command) {
  // ...
  FlutterWindow window(project);
  Win32Window::Point origin(10, 10);
  Win32Window::Size size(1280, 720);
  // 这里修改软件名，例如：AFAN
  if (!window.Create(L"AFAN", origin, size)) {
    return EXIT_FAILURE;
  }
  window.SetQuitOnClose(true);
  // ...
}