Closes#6649
This is a port of existing C++ Windows PowerShell code from MainEntry.cpp
Some of the code has been copied and minified from the WindowsApiPack.
The code is not compiled for Linux (not sure also another condition is needed for Windows on ARM?).
The code checks if the PowerShell process has a window handle by checking the startupinfo and only then tries to populate the list (and also checks if there is a slot available in the jumplist).
Tested on Windows 10 1803, jumpLists have been supported in Windows since Windows 7, which matches what PowerShell Core supports.
