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

The example for emitting events explains how to do spans and metrics, but not logs.
https://github.com/open-telemetry/opentelemetry-weaver-examples/tree/main/basic#emit-example-telemetry

@jerbly confirmed in Slack that logs are not supported yet.

Describe the solution you'd like

Running weaver registry emit -r model should be able to emit logs (events) as well as spans and traces

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