Health check collector#67
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Motivation:
While implementing liveness and readiness probes, I encountered a decoupling issue: health checks had to be initialized inside the HTTP server verticle to expose them via the REST API, but the actual components contributing to these checks are distributed across various verticles throughout the service.
To resolve this architectural mismatch, this PR introduces a mechanism to announce and collect health check statuses asynchronously via the Vert.x event bus. This decouples the HTTP infrastructure from the individual component logic.
Conformance: