Add bulk vehicle repair functionality in Falukant module

- Implemented a new repairAllVehicles method in FalukantService to handle the repair of multiple vehicles at once, including cost calculation and precondition checks.
- Updated FalukantController to expose the repairAllVehicles endpoint, allowing users to initiate bulk repairs via the API.
- Enhanced FalukantRouter to include a new route for bulk vehicle repairs.
- Modified BranchView component to add UI elements for repairing all vehicles, including a dialog for confirmation and displaying repair details.
- Updated German localization files to include translations related to bulk vehicle repair actions, improving user experience for German-speaking users.

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

@@ -28,6 +28,9 @@
             "notify_election_created": "Es wurde eine neue Wahl ausgeschrieben.",
             "production": {
                 "overproduction": "Überproduktion: Deine Produktion liegt {value}% über dem Bedarf."
+            },
+            "transport": {
+                "waiting": "Transport wartet"
             }
         },
         "health": {
@@ -319,8 +322,16 @@
                 "cancel": "Abbrechen",
                 "close": "Schließen",
                 "repair": "Reparieren",
+                "repairWithCost": "Reparieren (Kosten: {cost})",
                 "repairTooltip": "Fahrzeug reparieren",
                 "repairVehicleTitle": "Fahrzeug reparieren",
+                "repairAll": "Alle reparieren ({count} Fahrzeuge, Kosten: {cost})",
+                "repairAllTitle": "Alle Fahrzeuge reparieren",
+                "repairAllDescription": "Möchtest du alle {count} Fahrzeuge reparieren? Gesamtkosten: {cost}",
+                "repairAllDiscount": "Hinweis: Bei Reparatur aller Fahrzeuge erhältst du 10% Rabatt.",
+                "repairAllConfirm": "Alle reparieren",
+                "repairAllSuccess": "Alle Fahrzeuge werden repariert!",
+                "repairAllError": "Fehler beim Reparieren der Fahrzeuge.",
                 "repairVehicleType": "Fahrzeugtyp",
                 "repairCurrentCondition": "Aktueller Zustand",
                 "repairCost": "Reparaturkosten",