[kube-prometheus-stack] Support customQueryParameters in kube-prometheus-stack

[JoshuaSmeda]

Is your feature request related to a problem ?

I'm unable to modify the custom query parameters in my default Prometheus data source.

Describe the solution you'd like.

The Prometheus data source gets automatically created, without the ability to set customQueryParameters to max_source_resolution=auto for example:

Link to code

Describe alternatives you've considered.

Creating the data source myself through additionalDatasources and turning off the default implementation.

Additional context.

No response