Changes

feat(pingcap/tidb): add flaky test analysis and reporting for bazel tests (#3711)

Parse bazel test logs for flaky cases and send results to the
cloudevents server. Archive bazel logs and JSON reports on failure.

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
 (commit: f177c27)