FEATURE REQUEST: Allow saving test results in a file

[alekdavis]

I know that I can redirect output to a file using PowerShell's tee or similar hacks, but it would be helpful to have native support. A use case is when our QA team runs tests, they'd like to see the results as the tests go, but once done, they may need to attach results to the tickets for change control as a proof that the tests completed. Maybe have a switch --save <filepath> or --log <filepath>.