Add support for the --test_runner_fail_fast option.
Add support for the --test_runner_fail_fast option.

See https://docs.bazel.build/versions/5.0.0/command-line-reference.html#flag--test_runner_fail_fast.

phst/rules_elisp,phst/rules_elisp,phst/rules_elisp,phst/rules_elisp,phst/rules_elisp