Add end-to-end smoke tests for the CsWinRT NuGet package#2456

Sergio0694 merged 42 commits into

staging/winrt-runtime-ref-assemblymicrosoft/CsWinRT:staging/winrt-runtime-ref-assemblyfrom

user/sergiopedri/smoke-testsmicrosoft/CsWinRT:user/sergiopedri/smoke-testsCopy head branch name to clipboard