feat: Add LinkTarget to FileSystemInfo for .NET 6 targets#790

fgreinacher merged 8 commits into

TestableIO:mainTestableIO/System.IO.Abstractions:mainfrom

BrianMcBrayer:bug/add-link-target-file-system-infoBrianMcBrayer/System.IO.Abstractions:bug/add-link-target-file-system-infoCopy head branch name to clipboard