Automatically file bugs if BPF performance changes by more than 2σ

[Alan-Jowett]

• Create script to get list of metrics whose most recent value is more than 2σ above the 30 days run mean value. See: check_results
• Create a scheduled workflow that executes the query.
• For each metric outside the range, either file a new issue or update the currently active issue.
• If the most recent run is more then 3 days old, file an new or update an existing issue.

This project has a problem that the metrics on Perf Dashboard are not being monitored for changes.

There should be issues automatically created for any metric that deviates by more than 2σ from the last 30 run mean value.

The script already exists in the bpf_conformance repo and requires a scheduled workflow to execute it. This should be a separate workflow from the existing one to ensure that it always runs, to catch cases where the existing workflow isn't running correclty.