win, tools: add nasm to boxstarter script

Adds NASM installation to the Boxstarter script.

Refs: https://github.com/nodejs/node/issues/19918

PR-URL: https://github.com/nodejs/node/pull/19950


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>