feat(localization): add and update translations for multiple languages

- Introduced new localization files for Albanian, German, Spanish, Portuguese, and Chinese, enhancing the application's multilingual support.
- Added new keys and updated existing translations in project-view, task-list-table, and settings files to improve user experience across different languages.
- Enhanced error handling and empty state messages in task management components to provide clearer feedback to users.
- Updated tooltip texts and button labels for better clarity and consistency in the user interface.

worklenz-frontend/public/locales/de/project-view.json

@@ -0,0 +1,14 @@
+{
+  "taskList": "Aufgabenliste",
+  "board": "Kanban-Board",
+  "insights": "Insights",
+  "files": "Dateien",
+  "members": "Mitglieder",
+  "updates": "Aktualisierungen",
+  "projectView": "Projektansicht",
+  "loading": "Projekt wird geladen...",
+  "error": "Fehler beim Laden des Projekts",
+  "pinnedTab": "Als Standard-Registerkarte festgesetzt",
+  "pinTab": "Als Standard-Registerkarte festsetzen",
+  "unpinTab": "Standard-Registerkarte lösen"
+}