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/tailwind.config.ts

@@ -2,10 +2,6 @@ import type { Config } from "tailwindcss"
 
 const config = {
     safelist: [
-        {
-        pattern: /to-(blue|yellow|green|pink|purple)-(50|100|200|950)/,
-        variants: ['dark'],
-        },
     ],
     darkMode: ["class"],
     content: [