add fastapi biz error code and response, biz erro don't use http error code
add TestCartesiaTTSProcessor; fix: TTSProcessor match end of sentence
add done_event to set
TTSProcessor add sync_order_send and _tts_done_event to set, run_tts send audio frames over then send tts stopped frame need subclass _tts_done_event to set
fix:
CartesiaTTSProcessor async websocket recv msg and EN rtvi is done
feat:
fix:
ui: