Configurable behavior when no tests match (`--no-tests`)

[MatthewMckee4]

When no tests match the given filters, karva should let the user control the behavior:

• --no-tests=pass — exit 0 (useful in CI with dynamic filters)
• --no-tests=warn — exit 0 but print a warning
• --no-tests=fail — exit non-zero (current behavior / good default)

This avoids false positives in CI when filter expressions legitimately match nothing on certain platforms or configurations.

See: https://nexte.st/docs/running/#options-and-arguments

[OmChillure]

Hey @MatthewMckee4 , was gonna take a try on this, how do you prefer this , with a -E approach or noraml --no-tests

[MatthewMckee4]

I'd prefer using --no-tests=fail|warn|pass like nextest does

[OmChillure]

Cool