loop over files instead of using wildcard twice

.activate-WX-windows: &activate-WX-windows

  - (Get-Content -Path "CMakeLists.txt") -replace '# \(add_compile_options\("\/WX"\)\)', '$1' | Set-Content -Path "CMakeLists.txt"

  - (Get-Content -Path "Workspace_msvc/*.vcxproj") -replace '<TreatWarningAsError>false', '<TreatWarningAsError>true' | Set-Content -Path "Workspace_msvc/*.vcxproj"

  - Get-ChildItem -Path "Workspace_msvc" -Filter "*.vcxproj" | ForEach-Object { (Get-Content -Path $_.FullName) -replace '<TreatWarningAsError>false', '<TreatWarningAsError>true' | Set-Content -Path $_.FullName }

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# Job templates