@Override public Class<? extends ModuleDefine> module() {
        return HealthCheckerModule.class;
    }
HealthCheckerProvider fetches health check metrics from telemetry module, then calculates health score and generates
details explains the score. External service or users can query health status by HealthCheckerService.
oap-server/server-health-checker/src/main/java/org/apache/skywalking/oap/server/health/checker/provider/HealthCheckerProvider.java