[SPARK-27166][SQL] Improve printSchema to print up to the given level
## What changes were proposed in this pull request?
This PR aims to improve `printSchema` to be able to print up to the given level of the schema.
```scala
scala> val df = Seq((1,(2,(3,4)))).toDF
df: org.apache.spark.sql.DataFrame = [_1: int, _2: struct<_1: int, _2: struct<_1: int, _2: int>>]
scala> df.printSchema
root
|-- _1: integer (nullable = false)
|-- _2: struct (nullable = true)
| |-- _1: integer (nullable = false)
| |-- _2: struct (nullable = true)
| | |-- _1: integer (nullable = false)
| | |-- _2: integer (nullable = false)
scala> df.printSchema(1)
root
|-- _1: integer (nullable = false)
|-- _2: struct (nullable = true)
scala> df.printSchema(2)
root
|-- _1: integer (nullable = false)
|-- _2: struct (nullable = true)
| |-- _1: integer (nullable = false)
| |-- _2: struct (nullable = true)
scala> df.printSchema(3)
root
|-- _1: integer (nullable = false)
|-- _2: struct (nullable = true)
| |-- _1: integer (nullable = false)
| |-- _2: struct (nullable = true)
| | |-- _1: integer (nullable = false)
| | |-- _2: integer (nullable = false)
```
## How was this patch tested?
Pass the Jenkins with the newly added test case.
Closes #24098 from dongjoon-hyun/SPARK-27166.
Authored-by: Dongjoon Hyun <dhyun@apple.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
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