help request: fluentd separate data pipeline for each source

### Describe the issue

I want to use the same fluentd deployment with two different data sources of type forward (different ports)

Without using the operator and CRDs, the solution with labels is simple and documented [here](https://docs.fluentd.org/configuration/routing-examples#with-label-input-greater-than-filter-greater-than-output)
> If you want to separate the data pipelines for each source, use Label.

While the fluentd CRDs support labels from the input, I did not find a method to expand it to the filter and output like the example in the docs.

### workaround
Another solution is to use tag prefix per source, but It reduces readability.

### How did you install fluent operator?

helm

### Additional context

_No response_