Scala-CLI config per-directory overrides

[bishabosha]

Is your feature request related to a problem? Please describe.
I can imagine situation where you would like to silence some warnings in say a "scripts" directory (such as multiple using directives), but then in a work-related directory you probably want to keep the warnings to follow good practises.

Describe the solution you'd like
Allow configuration of scala cli in a local directory

Describe alternatives you've considered
a new setting key which is a directory to silence warnings of multiple using directives

Additional context
I do a lot of scripting