Push-Metrics (without push-gateway) remote-write or openTelemetry

[wrenix]

It would be nice to shutdown my push-gateway and use instatt:

• remote_write: --web.enable-remote-write-receiver: https://prometheus.io/docs/prometheus/3.9/command-line/prometheus/
• or newer openTelemetry: https://prometheus.io/docs/guides/opentelemetry/