feat: Added Viewer Metadata & Quotes Events to the WebSocket Server

[eliasthompson]

Description of the Change

Modifed src\server\websocket-events-handler.ts and src\backend\viewers\viewer-metadata-manager.ts to emit viewer-metadata:created, viewer-metadata:updated, and viewer-metadata:deleted events using the same payload as eventManager does.

Applicable Issues

N/A, just wanted this for myself lol

Testing

Didn't see any unit tests to update, but I ran the app locally and confirmed that all three new event types were working as intended.

Screenshots

[eliasthompson]

Went ahead and added events for quotes while this was pending review. Tested in the same way.