* feat: introduce OpenTelemetry Tracing decorators (#1257)

* feat: introduce OpenTelemetry Tracing decorators

* update test coverage

* add tests, update fixture

* update noxfile, extras; remove print

* update unit test

* review comments

* feat: instrument metadata ops with OTel tracing (#2) (#1267)

* feat: instrument metadata ops with Otel tracing

* update README plus test

* update decorator name per review session

* fix typo in readme

* feat: OTel tracing media ops initial instrumentation (#1280)

* feat: OTel tracing media ops initial instrumentation

* use download class name as span name

* avoid asserting filtered warnings from otel per open-telemetry/opentelemetry-python#3164

* add copyright and preview note

* comments