Add consumption entity and use strongly typed ids

src/WebApi/Cars/CreateCar.cs

@@ -63,7 +63,7 @@ public static class CreateCar
 		await dbContext.Cars.AddAsync(car, cancellationToken);
 		await dbContext.SaveChangesAsync(cancellationToken);
 
-		Response response = new(car.Id, car.Name);
+		Response response = new(car.Id.Value, car.Name);
 		return TypedResults.Created($"/v1/cars/{car.Id}", response);
 	}
 }