build,win: include addons-napi in linter

Currently test/addons-napi files are not being included in the lint
processing. This commit adds them.

PR-URL: https://github.com/nodejs/node/pull/16181


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>