message: Option to hide ImGui menu via .ini file
diff: @@ -334,6 +334,14 @@ struct renderer : viewer_type
  use_dof = dof;
  }
  + // ImGui menu
  + bool hud = show_hud;
  + err = ini.get_bool("hud", hud);
  + if (err == inifile::Ok)
  + {
  + show_hud = hud;
  + }
  +
  // headlight
  bool headlight = use_headlight;
  err = ini.get_bool("headlight", headlight);
  