Add support for text to speech and speech to text (#863)

- Add support for text to speech, speech to text. Add loading and responsive indicators to reflect state.
- When streaming for speech to text, show incremental transcription in the message input field
- When streaming text to speech, and a pause button in the chat message to allow user to stop playback

src/interface/web/app/chat/page.tsx

@@ -65,7 +65,7 @@ function ChatBodyData(props: ChatBodyDataProps) {
         }
     }, [props.streamedMessages]);
 
-    if(!conversationId) {
+    if (!conversationId) {
         window.location.href = '/';
         return;
     }