[Infrastructure] Setup test infrastructure

[harinikmsft]

This is a master task to investigate what the test infrastructure tasks will be to have integration tests etc., setup for RNWCPP.

See https://microsoft.sharepoint.com/teams/ReactNativeWindows/_layouts/OneNote.aspx?id=%2Fteams%2FReactNativeWindows%2FSiteAssets%2FReact%20Native%20Windows%20Notebook&wd=target%28RNW%20CPP.one%7C89065EBB-7168-4DC6-9CDE-849E760F9B35%2FTest%20Plan%7C960C9CDE-0ECB-4529-87E8-6CB4E896D794%2F%29
onenote:https://microsoft.sharepoint.com/teams/ReactNativeWindows/SiteAssets/React%20Native%20Windows%20Notebook/RNW%20CPP.one#Test%20Plan&section-id={89065EBB-7168-4DC6-9CDE-849E760F9B35}&page-id={960C9CDE-0ECB-4529-87E8-6CB4E896D794}&end

Of particular importance is to investigate the technologies that host javascript-based tests:
-Storybook
-Facebook's tests