Add a close and open buttons in the tray (linux)

[smotim]

Please add the ability to close and open the application from the tray icon, as it is done in Telegram.
When you close the Amnezia window, then you have to look for it again in the application menu, because you can't launch it from the icon on top. And you can completely close the application only through the "Exit" button in the menu or System Monitor.