add HealthController with health check endpoint

Author: gabrielldn

src/main/java/com/example/controller/HealthController.java

@@ -0,0 +1,13 @@
+package com.example.controller;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+import java.util.Map;
+
+@RestController
+public class HealthController {
+    @GetMapping("/health")
+    public Map<String, String> health() {
+        return Map.of("status", "UP");
+    }
+}

target/classes/com/example/controller/HealthController.class

@@ -1,5 +1,6 @@
 com/example/model/User.class
 com/example/exception/UserNotFoundException.class
+com/example/controller/HealthController.class
 com/example/repository/UserRepository.class
 com/example/controller/UserController.class
 com/example/RestApiApplication.class

target/java-api-0.0.1-SNAPSHOT.jar

@@ -4,4 +4,5 @@
 /home/gaellopes/java-api-with-otlp-sdk/src/main/java/com/example/RestApiApplication.java
 /home/gaellopes/java-api-with-otlp-sdk/src/main/java/com/example/repository/UserRepository.java
 /home/gaellopes/java-api-with-otlp-sdk/src/main/java/com/example/controller/UserController.java
+/home/gaellopes/java-api-with-otlp-sdk/src/main/java/com/example/controller/HealthController.java
 /home/gaellopes/java-api-with-otlp-sdk/src/main/java/com/example/model/User.java