[BinFmt] AppDomainSetup

[JanKrivanek]

Background

#6215
This subitem is focused on

msbuild/src/Build/BackEnd/Node/NodeConfiguration.cs

Line 164 in 363f522

translator.TranslateDotNet(ref _appDomainSetup);

Note - the code path is currently executed only on Full Framework - so it's not of a high priority for current BinaryFormatter deprecation work. However it should be easy to get rid of it and so completely remove TranslateDotnet

Suggested approach

It seems all we need are actually 'ConfigurationBytes' (https://github.com/dotnet/msbuild/blob/main/src/Shared/TaskLoader.cs#L95-L99) - so instead of remoting whole AppDomainSetup, transfer only byte[]

[JanKrivanek]

Adding telemetry-ideas label - Are the ConfigurationBytes ever non null?