b95a6afe77
Add support for Gladia's speech_start/speech_end events to emit UserStartedSpeakingFrame and UserStoppedSpeakingFrame frames. When enable_vad=True in GladiaInputParams: - speech_start triggers interruption and pushes UserStartedSpeakingFrame - speech_end pushes UserStoppedSpeakingFrame - Tracks speaking state to prevent duplicate events This allows using Gladia's built-in VAD instead of a separate VAD in the pipeline.