[VL] Support function ToPrettyString

[jinchengchenghh]

The expression is available since Spark 3.5. Prior versions use CAST for binary output.
Spark 4.0 introduces the optional config spark.sql.binaryOutputStyle.
This PR supports only the default behavior (HEX_DISCRETE), which is used when the config is unset.

[github-actions]

Run Gluten Clickhouse CI on x86

[rui-mo]

Would you resolve the below failure?

Error:  /__w/incubator-gluten/incubator-gluten/gluten-substrait/src/main/scala/org/apache/gluten/expression/ExpressionMappings.scala:110: error: not found: type ToPrettyString
Error:      Sig[ToPrettyString](TO_PRETTY_STRING),

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Run Gluten Clickhouse CI on x86

[jinchengchenghh]

The version spark 3.5 works well, but spark4.0 and Spark 4.1 introduces BINARY_OUTPUT_STYLE, we only support the default HEX_DISCRETE as spark 3.5, so I will update the test after spark 4.0

val BINARY_OUTPUT_STYLE = buildConf("spark.sql.binaryOutputStyle")
    .doc("The output style used display binary data. Valid values are 'UTF-8', " +
      "'BASIC', 'BASE64', 'HEX', and 'HEX_DISCRETE'.")
    .version("4.0.0")
    .enumConf(BinaryOutputStyle)
    .createOptional

[github-actions]

Run Gluten Clickhouse CI on x86

[github-actions]

Run Gluten Clickhouse CI on x86

[github-actions]

Run Gluten Clickhouse CI on x86

[github-actions]

Run Gluten Clickhouse CI on x86

[github-actions]

Run Gluten Clickhouse CI on x86

[github-actions]

Run Gluten Clickhouse CI on x86

[jinchengchenghh]

Could you help approve this PR? Thanks! @rui-mo

[rui-mo]

Thanks.

[ArnavBalyan]

Thanks

[rui-mo]

It would be better to add a test to ensure this function could be offloaded by verifying the plan.

[jinchengchenghh]

I try to add a unit test

  test("to_pretty_string") {
    val df = spark.sql("SELECT isnull(1)")
    df.show()
    print("plan is " + df.queryExecution.executedPlan.toString())
    checkGlutenPlan[ProjectExecTransformer](df)
  }

+-----------+
|(1 IS NULL)|
+-----------+
| false|
+-----------+

plan is VeloxColumnarToRow
+- ^(1) ProjectExecTransformer [isnull(1) AS (1 IS NULL)#146]
+- ^(1) InputIteratorTransformer[]
+- RowToVeloxColumnar
+- *(1) Scan OneRowRelation[]

But the plan does not contain the to_pretty_string, so it is hard to verify if it is really offload to native unless we can check the native plan.

But ToPrettyString is really offloaded since the unit test getRows::binary failed with this PR