Add Falukant region and transport management features

- Implemented new endpoints in AdminController for managing Falukant regions, including fetching, updating, and deleting region distances.
- Enhanced the FalukantService with methods for retrieving region distances and handling upsert operations.
- Updated the router to expose new routes for region management and transport creation.
- Introduced a transport management interface in the frontend, allowing users to create and manage transports between branches.
- Added localization for new transport-related terms and improved the vehicle management interface to include transport options.
- Enhanced the database initialization logic to support new region and transport models.

backend/models/falukant/data/vehicle.js

@@ -17,6 +17,18 @@ Vehicle.init(
       type: DataTypes.INTEGER,
       allowNull: false,
     },
+    condition: {
+      // current condition of the vehicle (0–100)
+      type: DataTypes.INTEGER,
+      allowNull: false,
+      defaultValue: 100,
+    },
+    availableFrom: {
+      // timestamp when the vehicle becomes available for use
+      type: DataTypes.DATE,
+      allowNull: false,
+      defaultValue: DataTypes.NOW,
+    },
   },
   {
     sequelize,