update controllers and services

src/main/java/com/faf223/expensetrackerfaf/service/IncomeService.java

@@ -17,6 +17,14 @@ public class IncomeService {
         this.incomeRepository = incomeRepository;
     }
 
+    public void createOrUpdateIncome(Income income) {
+        incomeRepository.save(income);
+    }
+
+    public List<Income> getIncomes() {
+        return incomeRepository.findAll();
+    }
+
     public List<Income> getIncomesByUserId(String userUuid) {
         return incomeRepository.findByUserUserUuid(userUuid);
     }

src/main/java/com/faf223/expensetrackerfaf/service/UserService.java

@@ -5,6 +5,8 @@ import com.faf223.expensetrackerfaf.repository.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 @Service
 public class UserService {
 
@@ -15,6 +17,14 @@ public class UserService {
         this.userRepository = userRepository;
     }
 
+    public void createOrUpdateUser(User user) {
+        userRepository.save(user);
+    }
+
+    public List<User> getUsers() {
+        return userRepository.findAll();
+    }
+
     public User getUserById(String userUuid) {
         return userRepository.findById(userUuid).orElse(null);
     }