Add vehicle management features in Falukant

- Introduced vehicle types and transport management in the backend, including new models and associations for vehicles and transports.
- Implemented service methods to retrieve vehicle types and handle vehicle purchases, ensuring user validation and transaction management.
- Updated the FalukantController and router to expose new endpoints for fetching vehicle types and buying vehicles.
- Enhanced the frontend with a new transport tab in BranchView, allowing users to buy vehicles, and added localization for vehicle-related terms.
- Included initialization logic for vehicle types in the database setup.

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

@@ -106,7 +106,8 @@
                 "director": "Direktor",
                 "inventory": "Inventar",
                 "production": "Produktion",
-                "storage": "Lager"
+                "storage": "Lager",
+                "transport": "Transportmittel"
             },
             "selection": {
                 "title": "Niederlassungsauswahl",
@@ -203,6 +204,25 @@
                 "buycost": "Kosten",
                 "sellincome": "Einnahmen"
             },
+            "vehicles": {
+                "cargo_cart": "Lastkarren",
+                "ox_cart": "Ochsenkarren",
+                "small_carriage": "Kleine Pferdekutsche",
+                "large_carriage": "Große Pferdekutsche",
+                "four_horse_carriage": "Vierspänner",
+                "raft": "Floß",
+                "sailing_ship": "Segelschiff"
+            },
+            "transport": {
+                "title": "Transportmittel",
+                "placeholder": "Hier kannst du Transportmittel für deine Region kaufen.",
+                "vehicleType": "Transportmittel",
+                "quantity": "Anzahl",
+                "totalCost": "Gesamtkosten",
+                "notEnoughMoney": "Du hast nicht genug Geld für diesen Kauf.",
+                "buy": "Transportmittel kaufen",
+                "balance": "Kontostand"
+            },
             "stocktype": {
                 "wood": "Holzlager",
                 "stone": "Steinlager",

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

@@ -30,6 +30,17 @@
             "knowledge": "Knowledge",
             "hire": "Hire",
             "noProposals": "No director candidates available."
+        },
+        "branch": {
+            "vehicles": {
+                "cargo_cart": "Cargo cart",
+                "ox_cart": "Ox cart",
+                "small_carriage": "Small horse carriage",
+                "large_carriage": "Large horse carriage",
+                "four_horse_carriage": "Four-horse carriage",
+                "raft": "Raft",
+                "sailing_ship": "Sailing ship"
+            }
         }
     }
 }