DNUP Path Manipulation #51124
Description
We need to write the code that elevates, modifies the PATH, and sets the sentinel file or registry key that is available in https://github.com/dotnet/runtime/pull/118092/files to make it so VS does not break our product. Please read https://github.com/dotnet/designs/tree/dnvm-e2e-experience/proposed the PATH document for further context.