Consider redacting username in binlogs

[rainersigwald]

Idea from @grendello on Discord:

however, @rainersigwald it would be nice if binlog masked the user's home directory path
it reveals login name
it's especially important on servers
it gives you a known existing account name
$HOME should be replaced with ~ or something like that

[JanKrivanek]

Related to #8400
Though removing the home folder from logs via events redacting would very likely be significantly impacting performance. The ideal solution would emit the replacement log at the places where we know the home folder is being introduced or used - there are however far too many and many of those are simple properties assignments - e.g.:

• https://github.com/dotnet/sdk/blob/main/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.Sdk.targets#L77
• https://github.com/dotnet/dotnet/blob/febdb074f5ada900f6ef37e35f297b0fced54e8c/src/msbuild/src/Tasks/Microsoft.Common.CurrentVersion.targets#L2519
• https://github.com/dotnet/dotnet/blob/0a0e0af43b236bd40b302e6f055453b1f9223eac/src/nuget-client/src/NuGet.Core/NuGet.Commands/RestoreCommand/Utility/BuildAssetsUtils.cs#L175

[JanKrivanek]

@grendello - while not built-in, you can achieve this now with the binlog viewer: KirillOsenkov/MSBuildStructuredLog#711 (comment)