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.

backend/models/falukant/data/transport.js

@@ -0,0 +1,41 @@
+import { Model, DataTypes } from 'sequelize';
+import { sequelize } from '../../../utils/sequelize.js';
+
+class Transport extends Model {}
+
+Transport.init(
+  {
+    sourceRegionId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    targetRegionId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    productId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    size: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+    vehicleId: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+    },
+  },
+  {
+    sequelize,
+    modelName: 'Transport',
+    tableName: 'transport',
+    schema: 'falukant_data',
+    timestamps: true,
+    underscored: true,
+  }
+);
+
+export default Transport;
+
+