win: add prompt to tools installation script

Fixes: https://github.com/nodejs/Release/issues/369

PR-URL: https://github.com/nodejs/node/pull/23987


Reviewed-By: John-David Dalton <john.david.dalton@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>