refactor(sort-orders): remove outdated deployment and implementation guides

- Deleted the `DEPLOYMENT_GUIDE_SORT_ORDERS.md` and `SEPARATE_SORT_ORDERS_IMPLEMENTATION.md` files as they are no longer relevant following the recent updates to the sort orders feature.
- Introduced new migration scripts to address duplicate sort orders and ensure data integrity across the updated task sorting system.
- Updated database schema to include new sort order columns and constraints for improved performance and organization.
- Enhanced backend functions and frontend components to support the new sorting logic and maintain user experience during task organization.

worklenz-frontend/src/features/task-management/taskListFields.slice.ts

@@ -14,10 +14,10 @@ const DEFAULT_FIELDS: TaskListField[] = [
   { key: 'KEY', label: 'Key', visible: false, order: 1 },
   { key: 'DESCRIPTION', label: 'Description', visible: false, order: 2 },
   { key: 'PROGRESS', label: 'Progress', visible: true, order: 3 },
-  { key: 'ASSIGNEES', label: 'Assignees', visible: true, order: 4 },
-  { key: 'LABELS', label: 'Labels', visible: true, order: 5 },
-  { key: 'PHASE', label: 'Phase', visible: true, order: 6 },
-  { key: 'STATUS', label: 'Status', visible: true, order: 7 },
+  { key: 'STATUS', label: 'Status', visible: true, order: 4 },
+  { key: 'ASSIGNEES', label: 'Assignees', visible: true, order: 5 },
+  { key: 'LABELS', label: 'Labels', visible: true, order: 6 },
+  { key: 'PHASE', label: 'Phase', visible: true, order: 7 },
   { key: 'PRIORITY', label: 'Priority', visible: true, order: 8 },
   { key: 'TIME_TRACKING', label: 'Time Tracking', visible: true, order: 9 },
   { key: 'ESTIMATION', label: 'Estimation', visible: false, order: 10 },