Context : We want to implement some counters to monitor server health. First counters will track : messageChannel sync status during job execution and invalid captcha. How : Counters are stored in cache and grouped by one-minute windows. Controllers are created for each metric, aggregating counter over a five-minutes window. Endpoints are public and will be queried by Prometheus. closes https://github.com/twentyhq/core-team-issues/issues/55