added health check for taiga-events-rabbitmq

[JibinKoshy07]

Added a health check for taiga-events-rabbitmq since taiga-events was exiting during initial startup due to its dependency on taiga-events-rabbitmq.

[b2cc]

Maybe check_local_alarms would be more useful? It could catch conditions where e.g. RabbitMQ is running into low memory watermark and basically stops working, yet it would still report ok during check_running. And it would also fulfill your requirement as it only reports ok when RabbitMQ is actually running.

[JibinKoshy07]

@b2cc You're absolutely right — using check_local_alarms would provide a more reliable health indicator, especially in cases where RabbitMQ is running but has hit memory or resource limits. It indeed makes more sense since it only reports OK when RabbitMQ is actually healthy and running properly.

[b2cc]

@JibinKoshy07 : maybe we should merge our two PRs into one (I submitted #153)

If it's ok for you I'd put together a new PR with your changes as well, and we can close the others.