system tray icon should be a spearate enitity, not related to any parent window

[kia-nasirzadeh]

first off thank you for your awesome project
i was tryin to use this on one of my project and i found a big problem, actually in some scenarios of my project flow, you just have a single system tray icon as the only visible control of your app, so it shouldn't be the child of any other window, i mean a system tray icon should be able to have an appearance (control) just by init it in app.xaml.cs, i have also red your todo on traymanager which says:

/*

• TODO: Handle closing of the parent window.
• NOTE
• The problem is as follows:
• If the main window is closed with the Debugger or simply destroyed,
• it will not send WM_CLOSE or WM_DESTROY to its child windows. This
• way, we can't tell tray to close the icon. Thus, we need to add to
• the TrayHandler a mechanism that detects that the parent window has
• been closed and then send
• Shell32.Shell_NotifyIcon(Shell32.NIM.DELETE, Shell32.NOTIFYICONDATA);
• In another situation, the TrayHandler can also be forced to close,
• so there is need to detect from the side somehow if this has happened
• and remove the icon.
  */

i mean actually it seems okay the way it is! no killing signal should be send to system tray class by closing the parent window and by the way no parent window should exists because as i said system tray should be compelete separate entity (as it's legacy behaviour in system.windows.forms.notifyIcon)

i will appretiate if you change the architecture
thank you