feat(task-management): implement context menu for task actions

- Added a context menu to the TaskRow component, allowing users to perform actions such as assigning tasks, archiving, deleting, and moving tasks between statuses, priorities, and phases.
- Introduced TaskContextMenu component to handle context menu logic and interactions.
- Enhanced task row styling for improved hover effects and visibility in both light and dark modes.
- Updated task management slice to include new actions for handling task assignments and conversions.

worklenz-frontend/src/shared/antd-imports.ts

@@ -98,6 +98,8 @@ export {
   CheckCircleOutlined,
   MinusCircleOutlined,
   RetweetOutlined,
+  DoubleRightOutlined,
+  UserAddOutlined,
 } from '@ant-design/icons';
 
 // Re-export all components with React