Refactor navigation and enhance director information display

- Removed the directors section from the navigation menu for a cleaner interface.
- Updated the FalukantService to include additional attributes for directors, such as knowledges and region.
- Enhanced the DirectorInfo component to display detailed information, including knowledge and income management features.
- Implemented tab navigation in BranchView for better organization of director, inventory, production, and storage sections.
- Updated localization files to reflect changes in navigation and tab labels.

frontend/src/i18n/locales/de/navigation.json

@@ -76,7 +76,6 @@
             "create": "Erstellen",
             "overview": "Übersicht",
             "towns": "Niederlassungen",
-            "directors": "Direktoren",
             "factory": "Produktion",
             "family": "Familie",
             "house": "Haus",