feat: oltp tracing

we should instrument our application with tracing spans and optionally export them as oltp

incoming requests (via all interfaces- p2p, rpc, etc) should be parsed to find a unique correlation id, a new one created if not found. a tracing span should be created for the lifespan of the request which contains this correlation id. any outbound requests made during the request (and any async effects which may run after the response is returned) should contain this correlation id

these spans should be collected and optionally (default off) sent to a otlp server (configurable)

normally would use `tracing` and `opentelemetry_otlp` for this but i have [this](https://fast.github.io/blog/fastrace-a-modern-approach-to-distributed-tracing-in-rust/) bookmarked too, maybe worth a look