add simple endpoint for users

src/main/java/ru/soune/no_copy/controller/UserController.java

@@ -0,0 +1,28 @@
+package ru.soune.no_copy.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import ru.soune.no_copy.dto.UserDTO;
+import ru.soune.no_copy.repository.UserRepository;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/user")
+@RequiredArgsConstructor
+public class UserController {
+
+    private final UserRepository userRepository;
+
+    @GetMapping("/all")
+    public ResponseEntity<List<UserDTO>> getAllUsers() {
+        List<UserDTO> allUsers = userRepository.findAll().stream()
+                .map(u -> new UserDTO(u.getFirstName(), u.getEmail(), u.getIsActive()))
+                .toList();
+
+        return ResponseEntity.ok(allUsers);
+    }
+}