Finish all rules, nodes and operators.

Author: Sh-Zh-7

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/GroupedTopNBuilder.java

@@ -0,0 +1,13 @@
+package org.apache.iotdb.db.queryengine.execution.operator;
+
+import org.apache.tsfile.read.common.block.TsBlock;
+
+import java.util.Iterator;
+
+public interface GroupedTopNBuilder {
+  void addTsBlock(TsBlock tsBlock);
+
+  Iterator<TsBlock> getResult();
+
+  long getEstimatedSizeInBytes();
+}