[SPARK-49720][PYTHON][INFRA] Add a script to clean up PySpark temp files

### What changes were proposed in this pull request?
Add a script to clean up PySpark temp files

### Why are the changes needed?
Sometimes I encounter weird issues due to the out-dated `pyspark.zip` file, and removing it can result in expected behavior.
So I think we can add such a script.

### Does this PR introduce _any_ user-facing change?
no, dev-only

### How was this patch tested?
manually test

### Was this patch authored or co-authored using generative AI tooling?
no

Closes apache#48167 from zhengruifeng/py_infra_cleanup.

Authored-by: Ruifeng Zheng <ruifengz@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

dev/py-cleanup

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Utility for temporary files cleanup in 'python'.
+#   usage: ./dev/py-cleanup
+
+set -ex
+
+SPARK_HOME="$(cd "`dirname $0`"/..; pwd)"
+cd "$SPARK_HOME"
+
+rm -rf python/target
+rm -rf python/lib/pyspark.zip
+rm -rf python/docs/build
+rm -rf python/docs/source/reference/*/api