Implement task completion prompt and enhance progress handling

- Added logic to prompt users to mark tasks as done when progress reaches 100%, integrating with the socket events for real-time updates.
- Updated backend functions to check task statuses and determine if a prompt is necessary based on the task's current state.
- Enhanced frontend components to display a modal for confirming task completion, improving user experience and clarity in task management.
- Refactored socket event handling to include new events for retrieving "done" statuses, ensuring accurate task status updates across the application.

worklenz-frontend/src/shared/socket-events.ts

@@ -67,4 +67,7 @@ export enum SocketEvents {
   // Task subtasks count events
   GET_TASK_SUBTASKS_COUNT,
   TASK_SUBTASKS_COUNT,
+  
+  // Task completion events
+  GET_DONE_STATUSES,
 }