[DBX-88683] update 526 state logger with StatsD

Summary

This work is behind a feature toggle (flipper): NO
Update the state logger to also use StatsD gauges. this will unblock the desired state visualization.
For now we are leaving the logs in place as well for full context, if needed.

[x] New code is covered by unit tests
Previously this just wrote logs, but Datadog mapping of a changing payload value is better handled with Gauges

526 state logging

[x] I fixed|updated|added unit tests and integration tests for each feature (if applicable).
[x] No error nor warning in the console.
[x] Events are being sent to the appropriate logging solution (comming soon)
[ ] Documentation has been updated (see above)
[x] No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs
[x] Feature/bug has a monitor built into Datadog (if applicable)
[x] If app impacted requires authentication, did you login to a local build and verify all authenticated routes work as expected
[ ] I added a screenshot of the developed feature (n/a)