Support baggage propagation without enabling tracing

[aviramha]

What Does This Do

Enable DataDog customers' use the built in context propagation without needing to enable APM using env DD_PROPAGATE_CONTEXT=true

Motivation

We have customers that want to propagate context to use our product. When customers are users of OTEL libraries they can just enable that feature, but customers of DataDog are blocked in either needing to:

1. move to OTEL libraries
2. enable APM product (though they don't want to use it, yet?)
3. manually propagate context

This allows them to stay within DD ecosystem and being on par with other auto instrumentation o11y libraries.

Additional Notes

Contributor Checklist

• Docs PR

• Labels - seems I can't do it from my side?

[chatgpt-codex-connector]

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[mhlidd]

👋 Hey @aviramha! Thanks for the contribution. Feature requests are routed through customer support channels - if you could leave a request there, we can make sure it gets reviewed by the proper team. 🙇‍♂️

[aviramha]

We're not a customer - where are the support channels?

[mhlidd]

Feel free to open a ticket or join the public Slack here.

[aviramha]

Which channel would be relevant? #apm?

[mhlidd]

👋 I consulted internally and the best course of action is to have your customers who would like this feature to open a ticket with our support team!