feat(task-filters): enhance localization and UI for task filters

- Added new translation keys for task filter functionalities across multiple languages, improving user experience and accessibility.
- Updated the ImprovedTaskFilters component to utilize localized strings for search placeholders, loading states, and filter messages.
- Enhanced styling for filter buttons and dropdowns to ensure consistency in both light and dark modes.
- Introduced a description column in task management components, improving the display of task details.

worklenz-frontend/src/components/task-list-v2/TaskRowWithSubtasks.tsx

@@ -93,6 +93,8 @@ const AddSubtaskRow: React.FC<AddSubtaskRowProps> = memo(({
         return <div style={baseStyle} />;
       case 'taskKey':
         return <div style={baseStyle} />;
+      case 'description':
+        return <div style={baseStyle} />;
       case 'title':
         return (
           <div className="flex items-center h-full" style={baseStyle}>