docs: add ecosystems/tracing.md to guide

[matt-codecov]

in case it's helpful, I wrote what I know about tapping into tracing data from Python in a new guide page. it describes two crates that take different approaches:

• pyo3-tracing-subscriber, which exposes configuration options for 3 specific tracing_subscriber::layer::Layer implementations to Python
• pyo3-python-tracing-subscriber, which implements a shim that forwards tracing data to a Python object that implements the tracing_subscriber::layer::Layer trait
  • disclaimer: I am the author of this crate

I haven't actually used pyo3-tracing-subscriber myself and the repo appears to be private but it recently published a new version on crates.io so I think it's still working/maintained.

let me know if you have any feedback, and no worries if this page is not wanted right now!

[davidhewitt]

Thanks for sharing! I think this is worth exploring though the repo being private does make it hard to recommend to users. Perhaps we can reach out to the owners and ask for it to be made public?

[matt-codecov]

attempted to reach out in an issue on a repository that has bindings generated by pyo3-tracing-subscriber: rigetti/qcs-sdk-rust#512

note: you can grab the source from crates.io still (curl -L 'https://crates.io/api/v1/crates/pyo3-tracing-subscriber/0.1.4/download' | tar -zxf -)