add share rate samples

recommend-server-service/pom.xml

@@ -189,7 +189,7 @@
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
                 <configuration>
-                    <mainClass>com.tzld.piaoquan.recommend.server.Application</mainClass>
+                    <mainClass>com.tzld.piaoquan.recommend.server.dataloader.OfflineShareSamplesLoader</mainClass>
                     <layout>ZIP</layout>
                 </configuration>
                 <executions>