Patch Changes
- add update_options to TTS - [922](https://github.com/livekit/agents/pull/922) ([theomonnom](https://github.com/theomonnom))
- pipelineagent: expose timing metrics & api errors wip - [957](https://github.com/livekit/agents/pull/957) ([theomonnom](https://github.com/theomonnom))
- expose usage metrics - [984](https://github.com/livekit/agents/pull/984) ([theomonnom](https://github.com/theomonnom))