otelpgx

Adds synchronous and asynchronous OpenTelemetry metrics (#43)

feat: implement pgxpool acquire tracer interface (#41)

Do not create spans from batch queries if parent span is not recording. (#36)

fix: don't prefix query span name if disabled in `TraceQueryStart` and `TracePrepareStart` (#35)

feat: add an option to remove the query span name prefix (#34)