feat(maven-cw-elevator): 增加 starter 模块与可执行发布包

- 新增 cw-elevator-application-starter：repackage 产出 cw-elevator-application-2.0.0.jar
- ElevatorApplication：Feign、MapperScan、Async、Cache、AOP、EnableCloudwalkEvent
- 父 POM 引入 Spring Cloud Greenwich.SR6 BOM；service 使用 spring-cloud-starter-openfeign
- 主类 Start-Class: cn.cloudwalk.elevator.ElevatorApplication

Made-with: Cursor

Former-commit-id: 2b89dcb5aab7c0f29a1068fc9839de99670f2789

maven-cw-elevator-application/pom.xml

@@ -22,6 +22,7 @@
         <module>cw-elevator-application-data</module>
         <module>cw-elevator-application-service</module>
         <module>cw-elevator-application-web</module>
+        <module>cw-elevator-application-starter</module>
     </modules>
 
     <properties>
@@ -56,10 +57,21 @@
         <nexus.public.repo>${nexus.baseUrl}/repository/maven-public/</nexus.public.repo>
         <formatter.maven.plugin.version>2.24.1</formatter.maven.plugin.version>
         <alibaba.eclipse.codestyle.path>${project.basedir}/../docs/style/alibaba-eclipse-codestyle.xml</alibaba.eclipse.codestyle.path>
+        <!-- 与 Spring Boot 2.1.18 对齐的 OpenFeign/Cloud 版本（发布包可执行 JAR 需要） -->
+        <spring-cloud.version>Greenwich.SR6</spring-cloud.version>
+        <!-- spring-boot-maven-plugin repackage 产出的可执行 JAR 文件名（不含 .jar） -->
+        <elevator.release.finalName>cw-elevator-application-2.0.0</elevator.release.finalName>
     </properties>
 
     <dependencyManagement>
         <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring-cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
             <dependency>
                 <groupId>cn.cloudwalk.cloud</groupId>
                 <artifactId>cloudwalk-common-result</artifactId>