[Windows build perf] Load linker output in a single task

[emaf]

Steps to Reproduce

The _LoadLinkerOutput target is executing many times (~10) the ReadItemsFromFile task remotely. Is this something we could consolidate in a single task/remote call? Each remote execution adds ~200ms to the execution of a task, so in this case we are adding almost 2 secods to the build time just because how this is executed.

Expected Behavior

Actual Behavior

Environment

Version information

Build Logs

Example Project (If Possible)

[rolfbjarne]

Maybe another option could be to copy these files back to Windows, and just read them there instead? I'm not sure what would be faster.