Enhance voice configuration with idle prompt features and new TTS settings

- Added idle prompt timeout, maximum count, and text to multiple voice configuration files to improve user interaction during idle periods.
- Updated greeting mode to 'fastgpt_opener' in relevant configurations for a more dynamic greeting experience.
- Introduced a new voice configuration file for xfyun TTS, including detailed service settings and parameters.
- Refactored the pipeline to handle idle prompts and user turn events, ensuring smoother interaction flow.
- Adjusted the VAD and turn configurations to accommodate new idle prompt features.

config/voice-fastgpt-xfyunTTS.json

@@ -42,12 +42,15 @@
       "你好",
       "在吗"
     ],
-    "user_speech_timeout_sec": 0.2
+    "user_speech_timeout_sec": 0.2,
+    "idle_prompt_timeout_sec": 3.0,
+    "idle_prompt_max_count": 3,
+    "idle_prompt_text": "你好，请问还在吗？"
   },
   "agent": {
     "system_prompt": "FastGPT app owns the system prompt when send_system_prompt is false.",
     "greeting": "您好，这里是无锡交警，我将为您远程处理交通事故。请将人员撤离至路侧安全区域，开启危险报警双闪灯、放置三角警告牌、做好安全防护，谨防二次事故伤害。若您已经准备好了，请点击继续办理，如需人工服务，请说转人工。",
-    "greeting_mode": "fixed",
+    "greeting_mode": "fastgpt_opener",
     "response_state": {
       "enabled": true,
       "tag": "state",
@@ -82,20 +85,18 @@
       "send_system_prompt": false
     },
     "tts": {
-      "provider": "xfyun_super",
+      "provider": "xfyun",
       "app_id": "416ce125",
       "api_key": "c65342fe603126c3610031d8429bb36d",
       "api_secret": "MzkyYmI5OWEyODQzN2FiN2VhN2UzYzU4",
-      "base_url": "wss://cbm01.cn-huabei-1.xf-yun.com/v1/private/mcd9m97e6",
-      "voice": "x5_lingxiaoxuan_flow",
+      "base_url": "wss://tts-api.xfyun.cn/v2/tts",
+      "voice": "x4_xiaoyan",
       "aue": "raw",
+      "tte": "UTF8",
       "speed": 50,
       "volume": 50,
       "pitch": 50,
-      "oral_level": "mid",
-      "source_sample_rate_hz": 24000,
-      "text_aggregation_mode": "token",
-      "timeout_sec": 30.0
+      "source_sample_rate_hz": 16000
     }
   }
 }