OpenTelemetry log export

I'd love to have exportable logs + general niceties related to logging. Making this issue so I can track my work. Do not contribute to this, I am working on this.

# cog.yaml
observability:
  logs: true

# predict.py
import logging


def predict() -> str:
    print("starting prediction")
    logging.info("preprocessing complete")
    return "result"

Both print() and logging show up in the collector carrying prediction context:

body: "starting prediction"
attributes: { source: stdout, operation: predict, cog.prediction.id: "..." }

body: "preprocessing complete"
attributes: { source: logging, operation: predict, cog.prediction.id: "..." }

Customization stays optional through telemetry.py:

# telemetry.py
from opentelemetry.sdk._logs import LoggerProvider
from opentelemetry.sdk.resources import Resource


def create_logger_provider(resource: Resource) -> LoggerProvider:
    ...

// coglet runtime events export to the same OpenTelemetry destination.
tracing::info!("prediction accepted");

The proposal references cog.yaml, predict.py, telemetry.py, and coglet runtime events. Start by reviewing the existing observability and logging entry points, then compare their behavior with the shown collector output. Done means the requested stdout, Python logging, and runtime event export behavior is supported with optional LoggerProvider customization.