Add OpenTelemetry to runwasi

[Mossaka]

otel allow us to collect telemetry and observe the performance of the deployment

• feat(tracing): add tracing instruments to containerd-shim-wasm #564
• Add collector to shim binaries
  • feat(containerd-shim-wasm): add OpenTelemetry tracing library and feature #582
• Convert log to tracing log and output tracing log to OTLP collcetors (e.g. OpenTelemetry tracing support to extend observability youki-dev/youki#1348)
• Passing OpenTelemetry (otel) Env Vars to the Shim Runtime containerd#10173
• Proposal(shim): preserve tracing context in shim::spawn  rust-extensions#268

[Mossaka]

I have spent the last few weeks on adding otel support to runwasi. you can see the diff here: https://github.com/containerd/runwasi/compare/main...Mossaka:runwasi:otel?expand=1

One major block point is there are some missing parent spans for functions like task_wait(). I was able to reproduce this issue with this demo repo: https://github.com/Mossaka/otel-condvar/tree/main. I now believe that there are some issues with either the tracing crate or the otel crate where I raised an issue here: open-telemetry/opentelemetry-rust#1595

I am going to pause this work for now and focus on other stuff and will come back to this.