Render operator train of thought as video on web app to ease viewing

- You can seek through the train of thought video of computer operation or
  follow it in live mode.
- Interleaves video with normal text thoughts.
- Video available of old interactions and currently streaming message.

src/interface/web/app/components/chatMessage/chatMessage.tsx

@@ -144,7 +144,7 @@ interface Intent {
     "inferred-queries": string[];
 }
 
-interface TrainOfThoughtObject {
+export interface TrainOfThoughtObject {
     type: string;
     data: string;
 }