feat: enhance ideation routes with event handling and new suggestion feature

- Updated the ideation routes to include an EventEmitter for better event management.
- Added a new endpoint to handle adding suggestions to the board, ensuring consistent category mapping.
- Modified existing routes to emit events for idea creation, update, and deletion, improving frontend notifications.
- Refactored the convert and create idea handlers to utilize the new event system.
- Removed static guided prompts data in favor of dynamic fetching from the backend API.

libs/types/src/event.ts

@@ -35,6 +35,10 @@ export type EventType =
   | 'ideation:analysis-progress'
   | 'ideation:analysis-complete'
   | 'ideation:analysis-error'
-  | 'ideation:suggestions';
+  | 'ideation:suggestions'
+  | 'ideation:idea-created'
+  | 'ideation:idea-updated'
+  | 'ideation:idea-deleted'
+  | 'ideation:idea-converted';
 
 export type EventCallback = (type: EventType, payload: unknown) => void;