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/public/locales/en/task-list-filters.json

@@ -55,5 +55,18 @@
   "selectCategory": "Select a category",
   "pleaseEnterAName": "Please enter a name",
   "pleaseSelectACategory": "Please select a category",
-  "create": "Create"
+  "create": "Create",
+
+  "searchTasks": "Search tasks...",
+  "searchPlaceholder": "Search...",
+  "fieldsText": "Fields",
+  "loadingFilters": "Loading filters...",
+  "noOptionsFound": "No options found",
+  "filtersActive": "filters active",
+  "filterActive": "filter active",
+  "clearAll": "Clear all",
+  "clearing": "Clearing...",
+  "cancel": "Cancel",
+  "search": "Search",
+  "groupedBy": "Grouped by"
 }