feat: enhance token usage tracking and history management

- Updated HTML assets for improved loading.
- Integrated token usage tracking in chat processing, appending usage details to transcripts.
- Enhanced OpenAIProvider to include usage data in chat completion responses.
- Implemented asynchronous retrieval of recent token usage history.
- Added utility functions for managing transcript files and parsing usage data.
- Updated UI components to reflect changes in usage status handling.
- Ensured consistent usage status definitions across the application.

global.d.ts

@@ -201,6 +201,7 @@ declare global {
   interface UniversalChunk {
     isEnd: boolean;
     result: string;
+    usage?: any;
   }
 
   interface DialogueBackStream {