Update StyleCop

[davidegiacometti]

Summary of the pull request

Updated StyleCop to the latest version to improve compatibility with latest .NET/C# feature.

References and relevant issues

#1259

Detailed description of the pull request / Additional comments

• Addressed StyleCop violations after the update
• Added file header to .editorconfig to automatically add it to new .cs files.
• Removed obsolete StyleCop suppressions in GlobalSuppressions.cs
• Added some new StyleCop suppression in GlobalSuppressions.cs (nice to have but with high impact in changes)

Validation steps performed

• Changes are mostly spaces and new lines and shouldn't have any impact.
• Verified that DevHome build and run as expected.

PR checklist

• Closes Upgrade StyleCop analyzers #1259
• Tests added/passed
• Documentation updated

[krschau]

Blocking while I check on the copyright thing.

[davidegiacometti]

Woow! Fixed! Didn't expect those line ending changes.

The files below have been changed from LF (main) to CRLF (PR). Is it fine or does it need to be reverted too?

• tools/SetupFlow/DevHome.SetupFlow/Controls/SetupFlowNavigation.xaml.cs
• tools/SetupFlow/DevHome.SetupFlow/Models/IWinGetPackage.cs

[krschau]

I'm really sorry but I had to update the headers, and this caused a bunch of conflicts for you. Hopefully they're not too painful to resolve.

[davidegiacometti]

Aligned the branch with main keeping the new header and fixed StyleCop errors.
Some of the newly introduced headers were // Copyright (c) Microsoft Corporation.. instead of // Copyright (c) Microsoft Corporation.: probably caused by a replace? 🤔

[krschau]

Some of the newly introduced headers were // Copyright (c) Microsoft Corporation.. instead of // Copyright (c) Microsoft Corporation.: probably caused by a replace? 🤔

Oh jeez🤦‍♀️Thanks for fixing those instances.