win: do not use Boxstarter to install tools

The script to install Python and Visual Studio on Windows uses Boxstarter to reboot the machine whenever a reboot is pending and disable some Windows features that can make the installation fail. This has been causing issues for some users, leaving the machine in an unexpected state when the installation is cancelled.

This PR removes Boxstarter, changing the script to use Chocolatey directly, thus not changing machine configuration. This makes it possible for the installation to fail because of interference from updates or previous installations, but I could not make this happen in my tests with the packages installed here. Hence, I believe this is a good trade-off to fix the issues that have been happening.

Fixes: https://github.com/nodejs/node/issues/23838 Refs: https://github.com/nodejs/node/issues/24637

cc @nodejs/platform-windows @gep13

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines