* [vcpkg osx ci] update to newer bits
these ones should actually work!
* update vagrantfile
* correct scripts, reformat, add docs
* Finish Get-InternalBaseBox, move archives
In order to avoid people maliciously deleting the boxes,
the archives share and file share are in different users now.
* baseline libqcow to be fixed later
* actually check for the mount point
* fix Install-Prerequisites again
* add +x to Get-InternalBaseBox.ps1
additionally, fix some errors
