Grille Powershell

Use when running PowerShell cmdlets or pipeline expressions on Windows via Grille ps_run. WHEN: 'run Get-Process', 'run PowerShell', 'run cmdlet', 'Test-NetConnection', 'ps_run', 'Get-Service'. DO NOT USE WHEN: 'run cargo', 'run git', 'run npm' (use grille-process); 'start service', 'stop service' (use grille-services).