[PATCH v26 0/4] MR2808: SNI tray implementation

[Cherser-s (＠Cherser-s)]

Adds the tray icons implementation based on org.kde.StatusNotifierItem interface usage. Does allow restarting StatusNotifierWatcher object, but will fallback to XEMBED or internal tray, if wine gets initialized when there is no StatusNotifierWatcher object registered.

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  v26: win32u: add SNI driver for systray handling
       win32u: add a SystrayRunLoop driver interface
       win32u: Refactor NotifyIcon driver interface into separate calls.
       win32u: add a ShowBalloon driver interface

https://gitlab.winehq.org/wine/wine/-/merge_requests/2808