feat(integration): 添加 Kafka 消息系统集成

- 新增 Kafka 配置和连接测试功能- 实现人脸处理消息的消费逻辑
- 添加消息发送预留接口
- 优化人脸样本保存和处理流程

src/main/resources/application-dev.yml

@@ -17,6 +17,24 @@ feign:
   okhttp:
     enabled: true
 
+# Kafka配置
+kafka:
+  enabled: false  # 默认关闭，需要时手动开启
+  bootstrap-servers: 100.64.0.12:39092
+  consumer:
+    group-id: liuying-microservice-dev
+    auto-offset-reset: earliest
+    key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
+    value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
+  producer:
+    acks: all
+    retries: 3
+    batch-size: 16384
+    linger-ms: 1
+    buffer-memory: 33554432
+    key-serializer: org.apache.kafka.common.serialization.StringSerializer
+    value-serializer: org.apache.kafka.common.serialization.StringSerializer
+
 # 开发环境日志配置
 logging:
   level: