feat(task-management): integrate date picker functionality in TaskCard component

- Added a date picker to the TaskCard for selecting and updating task due dates.
- Implemented real-time updates for due date changes using socket communication.
- Enhanced UI with a custom calendar popup and improved date selection options.
- Updated localization files to include new strings related to date management in multiple languages.

worklenz-frontend/public/locales/de/kanban-board.json

@@ -21,5 +21,10 @@
   "newTaskNamePlaceholder": "Aufgabenname eingeben",
   "newSubtaskNamePlaceholder": "Unteraufgabenname eingeben",
   "untitledSection": "Unbenannter Abschnitt",
-  "unmapped": "Nicht zugeordnet"
+  "unmapped": "Nicht zugeordnet",
+  "clickToChangeDate": "Klicken Sie, um das Datum zu ändern",
+  "noDueDate": "Kein Fälligkeitsdatum",
+  "save": "Speichern",
+  "clear": "Löschen",
+  "nextWeek": "Nächste Woche"
 }