Refactor(user): 引入分布式ID生成服务替代Redis自增ID

- 添加对 han-note-distributed-id-generator-api 模块的依赖
- 实现 DistributedIdGeneratorRpcService 调用远程ID生成服务
- 替换用户注册时使用的Redis自增ID为RPC方式获取
- 删除原有从数据库获取用户ID的逻辑
- 更新pom.xml引入新的API依赖并管理版本

han-note-distributed-id-generator/han-note-distributed-id-generator-api/src/main/java/com/hanserwei/hannote/distributed/id/generator/api/DistributedIdGeneratorFeignApi.java

@@ -0,0 +1,19 @@
+package com.hanserwei.hannote.distributed.id.generator.api;
+
+import com.hanserwei.hannote.distributed.id.generator.constant.ApiConstants;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+
+@FeignClient(name = ApiConstants.SERVICE_NAME)
+public interface DistributedIdGeneratorFeignApi {
+
+    String PREFIX = "/id";
+
+    @GetMapping(value = PREFIX + "/segment/get/{key}")
+    String getSegmentId(@PathVariable("key") String key);
+
+    @GetMapping(value = PREFIX + "/snowflake/get/{key}")
+    String getSnowflakeId(@PathVariable("key") String key);
+
+}

han-note-distributed-id-generator/han-note-distributed-id-generator-api/src/main/java/com/hanserwei/hannote/distributed/id/generator/constant/ApiConstants.java

@@ -0,0 +1,9 @@
+package com.hanserwei.hannote.distributed.id.generator.constant;
+
+public interface ApiConstants {
+
+    /**
+     * 服务名称
+     */
+    String SERVICE_NAME = "han-note-distributed-id-generator";
+}