[Bug 42201] New: Implement Taskbar Extensions

https://bugs.winehq.org/show_bug.cgi?id=42201

Bug ID: 42201
           Summary: Implement Taskbar Extensions
           Product: Wine
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: shell32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Windows apps can be controlled through taskbar and can report their status in
taskbar.
https://msdn.microsoft.com/ru-ru/library/windows/desktop/dd378460.aspx

Though linux doesn't have this functionality, at least in KDE Plasma there is a
tray for notifications where apps can put progressbars and icons.
https://api.kde.org/frameworks/kjobwidgets/html/classKUiServerJobTracker.htm...

The functionality is a bit similar so the straightforward solution it to
implement Taskbar Extensions through KUiServer