feat: impl arrow NestedLoopJoin

Author: aqni

core/src/main/java/cn/edu/tsinghua/iginx/engine/physical/memory/execute/compute/join/CrossJoinArrayList.java

@@ -61,6 +61,9 @@ public void close() {
     buildSideSingleBatch.close();
   }
 
+  @Override
+  public void flush() throws ComputeException {}
+
   @Override
   public void probe(
       DictionaryProvider dictionaryProvider,
@@ -73,9 +76,6 @@ public void probe(
     }
   }
 
-  @Override
-  public void flush() throws ComputeException {}
-
   private void probe(VectorSchemaRoot probeSideBatch) throws ComputeException {
     Preconditions.checkArgument(probeSideBatch.getSchema().equals(probeSideSchema));