Immediate termination when unit test fails (mutant is killed)

[ctoyan]

Implement a feature that allows immediate termination of test execution upon the first failure when testing a mutant. This ensures mutants are marked as killed as soon as possible and avoids wasting resources running the full test suite unnecessarily. Achieving this may require integration with, or contributions to, the Aptos-core Move unit test runner to support early exit behavior if it is not already available.

[joske]

Aptos bits: aptos-labs/aptos-core#17549

This needs to get merged before we can get our own code in.

[joske]

#138