feat(dto): add API response and health response DTOs

Author: xanderbilla

src/main/java/com/example/demo/dto/ApiResponse.java

@@ -0,0 +1,60 @@
+package com.example.demo.dto;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class ApiResponse<T> {
+    private String message;
+    private LocalDateTime timestamp;
+    private int status;
+    private boolean success;
+    private T data;
+
+    public static <T> ApiResponse<T> success(String message, T data) {
+        return ApiResponse.<T>builder()
+                .message(message)
+                .timestamp(LocalDateTime.now())
+                .status(200)
+                .success(true)
+                .data(data)
+                .build();
+    }
+
+    public static <T> ApiResponse<T> success(String message) {
+        return ApiResponse.<T>builder()
+                .message(message)
+                .timestamp(LocalDateTime.now())
+                .status(200)
+                .success(true)
+                .build();
+    }
+
+    public static <T> ApiResponse<T> error(String message, int status) {
+        return ApiResponse.<T>builder()
+                .message(message)
+                .timestamp(LocalDateTime.now())
+                .status(status)
+                .success(false)
+                .build();
+    }
+
+    public static <T> ApiResponse<T> error(String message, int status, T data) {
+        return ApiResponse.<T>builder()
+                .message(message)
+                .timestamp(LocalDateTime.now())
+                .status(status)
+                .success(false)
+                .data(data)
+                .build();
+    }
+}

src/main/java/com/example/demo/dto/HealthResponse.java

@@ -0,0 +1,22 @@
+package com.example.demo.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+import java.util.Map;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class HealthResponse {
+    private String status;
+    private String message;
+    private LocalDateTime timestamp;
+    private Map<String, Object> details;
+    private Long uptime;
+    private String version;
+}