Flash console window on input request on Windows

Checklist

[x] I read and understood the Contributing Guidelines.
[x] This is not a duplicate of an existing merge request.
[x] I believe this falls into the scope of the project and should be part of the built-in functionality.
[x] My code follows the code style of this project.
[x] I have added tests to cover my changes, wherever they are necessary.
[x] All new and existing tests pass.

Adds flashing console window on Windows when ASF requests the user input.

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Resolves #2998.