add files for 1st practical (not working yet)

src/main/java/ua/com/dxrkness/model/Freight.java

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+package ua.com.dxrkness.model;
+
+public record Freight() {
+}

src/main/java/ua/com/dxrkness/model/Route.java

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+package ua.com.dxrkness.model;
+
+public record Route() {
+}

src/main/java/ua/com/dxrkness/model/Vehicle.java

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+package ua.com.dxrkness.model;
+
+public record Vehicle() {
+}

src/main/java/ua/com/dxrkness/service/FreightService.java

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+package ua.com.dxrkness.service;
+
+import org.springframework.stereotype.Service;
+import ua.com.dxrkness.model.Freight;
+
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class FreightService {
+    public List<Freight> getAll() { }
+    public Freight add(Freight freight) { }
+    public Optional<Freight> getById(long id) { }
+    public Freight update(long id, Freight newFreight) { }
+    public Freight delete(long id) { }
+}

src/main/java/ua/com/dxrkness/service/RouteService.java

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+package ua.com.dxrkness.service;
+
+import org.springframework.stereotype.Service;
+import ua.com.dxrkness.model.Route;
+
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class RouteService {
+    public List<Route> getAll() { }
+    public Optional<Route> getById(long id) { }
+    public Route add(Route route) { }
+    public Route getByFreightId(long freightId) { }
+    public Route getByVehicleId(long vehicleId) { }
+    public Route update(long id, Route newRoute) { }
+    public Route delete(long id) { }
+}

src/main/java/ua/com/dxrkness/service/VehicleService.java

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+package ua.com.dxrkness.service;
+
+import org.springframework.stereotype.Service;
+import ua.com.dxrkness.model.Vehicle;
+
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class VehicleService {
+    public List<Vehicle> getAll() { }
+
+    public Vehicle add(Vehicle veh) { }
+
+    public Optional<Vehicle> getById(long id) { }
+
+    public Vehicle update(long id, Vehicle newVehicle) { }
+
+    public Vehicle delete(long id) { }
+}