Recipe module for OS utilities.

For now it only contains a method to kill all the windows processes that
can prevent the task chroot cleanup.

Change-Id: I5ed09ed9c391562f450321ab31ebde74862092b9
Bug: https://github.com/flutter/flutter/issues/62811
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/5080
Commit-Queue: Godofredo Contreras <godofredoc@google.com>
Reviewed-by: Keyong Han <keyonghan@google.com>