add realtime model settings

Author: Jicheng Lu

src/WebStarter/appsettings.json

@@ -570,6 +570,20 @@
     }
   },
 
+  "RealtimeModel": {
+    "Provider": "openai",
+    "Model": "gpt-realtime",
+    "InputAudioFormat": "pcm16",
+    "OutputAudioFormat": "pcm16",
+    "InterruptResponse": true,
+    "MaxResponseOutputTokens": 4096,
+    "InputAudioTranscribe": true,
+    "InputAudioTranscription": {
+      "Model": "whisper-1",
+      "Language": "en"
+    }
+  },
+
   "PluginLoader": {
     "Assemblies": [
       "BotSharp.Core",