[Feature] Allow orgId setting when integrating to external Grafana.

[gomgomshrimp]

Problem Statement

When integrating an external Grafana, if orgId is not 1, the link cannot be used.

I set up an external Grafana address in kubecost like this:

Links from kubecost to Grafna have an orgId fixed to 1.
However, the Grafana I use uses a different orgId value, so I have to access it as 38.

# Links from kubecost
https://grafana.lgeinfra.com/d/at-cost-analysis-pod/pod-cost-and-utilization-metrics?orgId=1&...

# Links to actually access
https://grafana.lgeinfra.com/d/at-cost-analysis-pod/pod-cost-and-utilization-metrics?orgId=38&...

If I just change the orgId, the link works fine.

Solution Description

Optionally add a way to set orgId when using external grafana.

Alternatives

No response

Additional Context

No response

Troubleshooting

• I have read and followed the issue guidelines and this is a feature request only for the Helm chart.
• I have searched other issues in this repository and mine is not recorded.