* windows: implement separate step for configuring Powershell * windows: refactor PyPy checksum validation PyPy checksum validation uses PowerHTML module which is now available as a part of powershell profile * reformat * Update images/win/scripts/Installers/Configure-PowerShell.ps1 Co-authored-by: Vasilii Polikarpov <[email protected]> --------- Co-authored-by: Vasilii Polikarpov <[email protected]>