AD: I made a grafana dashboard, which contains all the golang runtime metrics of this component

[ahfuzhang]

I made a grafana dashboard, which contains all the golang runtime metrics of this component. Could you put the json file of grafana dashboard into the code directory? In this case, people who use this component in the future can import grafana reports with one click.

see: https://github.com/ahfuzhang/deploy_VictoriaMetrics_cluster/tree/main/grafana_dashboard