Add docs about using VS to do direct debugging

[asklar]

trafficstars

There's a little blurb in the debugging menu but we should add docs on how to do this (and how to bring up the debugging menu in the first place :) )

[chrisglein]

Could be structured in the docs under some "tools" section that covers both VS and VSCode. But it sounds like this scenario requires full VS, and is specific to Chakra.