Support advanced setting for the Prometheus Scrape Metrics input

**Is your feature request related to a problem? Please describe.**

Drop or keep specific metrics when scraping Prometheus metrics to avoid collecting unused data.

**Describe the solution you'd like**

Drop or keep specific metrics when scraping Prometheus metrics to avoid collecting unused data.

**Describe alternatives you've considered**

Add similar configurations like [OpenTelemetry Prometheus Receiver](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/prometheusreceiver):
```yaml
receivers:
prometheus:
config:
scrape_configs:
- job_name: k8s
......
relabel_configs:
- source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
regex: "true"
action: keep
metric_relabel_configs:
- source_labels: [__name__]
regex: "(request_duration_seconds.*|response_duration_seconds.*)"
action: keep
```
Maybe by adding an additional field like `metric_relabel_configs`？

**Additional context**

https://prometheus.io/docs/prometheus/latest/configuration/configuration/#metric_relabel_configs
https://prometheus.io/docs/prometheus/latest/configuration/configuration/#relabel_config
https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/prometheusreceiver
https://opentelemetry.io/docs/collector/configuration/#receivers