[Feature]增加Truncate数据功能(#1062)

增加Truncate数据功能(#1043)

目前已经完成后端部分，前端待补充。

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Co-authored-by: duanxiaoqiu <duanxiaoqiu@qiyi.com>

km-rest/src/main/java/com/xiaojukeji/know/streaming/km/rest/api/v3/topic/TopicController.java

@@ -61,6 +61,13 @@ public class TopicController {
         return opTopicManager.expandTopic(dto, HttpRequestUtil.getOperator());
     }
 
+    @ApiOperation(value = "Topic数据清空", notes = "")
+    @PostMapping(value = "topics/truncate-topic")
+    @ResponseBody
+    public Result<Void> truncateTopic(@Validated @RequestBody ClusterTopicDTO dto) {
+        return opTopicManager.truncateTopic(dto.getClusterId(), dto.getTopicName(), HttpRequestUtil.getOperator());
+    }
+
     @ApiOperation(value = "Topic元信息", notes = "带是否存在信息")
     @GetMapping(value = "clusters/{clusterPhyId}/topics/{topicName}/metadata-combine-exist")
     @ResponseBody