Enhancement Request

The QSS script stuff is actually deprecated and should be totally removed, the workflow(s) that use it replaced, and documentation updated.

Detailed Description

https://doc.qt.io/qtinstallerframework/ifw-use-cases-cli.html#unattended-usage

Possible Implementation

QtIFW 4.0.0 added a CLI feature.

./OpenStudioApplication-x.y-z.exe --accept-licenses --default-answer --confirm-command --root ${installDir} install

Reported at #775 (comment)