textToSpeechStream method
Convert text to speech with streaming output
Throws UnsupportedError if not supported. Check supportedFeatures first.
Implementation
@override
Stream<AudioStreamEvent> textToSpeechStream(TTSRequest request) {
// ElevenLabs supports streaming TTS
// This is a simplified implementation - in practice, you'd implement
// the actual streaming API calls
throw UnsupportedError('Streaming TTS implementation pending');
}