New option to allow `\Verb*` to be configured exactly as `\verb*`

[muzimuzhi]

Just a reminder so the idea won't get lost.

At some point, it may be worth adding a tabstospaces or similar option that would convert all tabs into spaces. This would allow fvextra's \Verb* to be configured exactly as \verb*. That might require reworking some of the space-dependent line-breaking algorithms, however.

Originally posted by @gpoore in #19 (comment)