[prometheus-smartctl-exporter] Add grafana dashboard to the helm chart

[maxpain]

Is your feature request related to a problem ?

We need some grafana dashboard for the prometheus-smartctl-exporter

Describe the solution you'd like.

Add some grafana dashboard

Describe alternatives you've considered.

I've not found any good grafana dashboards

Additional context.

No response

[maxpain]

prometheus-community/smartctl_exporter#36
prometheus-community/smartctl_exporter#64

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Any further update will cause the issue/pull request to no longer be considered stale. Thank you for your contributions.

[stale]

This issue is being automatically closed due to inactivity.