[feature request] Add Host and Port configuration for Prometheus

[martincostello]

Package

OpenTelemetry.Exporter.Prometheus.HttpListener

Is your feature request related to a problem?

As part of open-telemetry/opentelemetry-specification#4805, we should add support for configuring the host and port:

• Stabilize Prometheus Metrics Exporter spec: Host configuration opentelemetry-specification#4984
• Stabilize Prometheus Metrics Exporter spec: Port configuration opentelemetry-specification#4985

/cc @johannaojeling @ArthurSens

What is the expected behavior?

Users can configure the host and port via the PrometheusHttpListenerOptions class.

We could have a transitionary period for at least one prerelease and mark PrometheusHttpListenerOptions.UriPrefixes as obsolete, removing it before releasing the stable version.

Which alternative solutions or features have you considered?

None.

Additional context

No response

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[sseelam2]

@martincostello I'd like to pick this up. Please let me know if that's okay.

[martincostello]

@sseelam2 Sure, feel free to pick this up if you're interested.