[feature] support TimestampNTZ

[kaori-seasons]

Proposed changes

Issue Number: Related to issues-298

Problem Summary:

Describe the overview of changes.

Checklist(Required)

1. Does it affect the original behavior: (Yes/No/I Don't know)
2. Has unit tests been added: (Yes/No/No Need)
3. Has document been added or modified: (Yes/No/No Need)
4. Does it need to update dependencies: (Yes/No)
5. Are there any changes that cannot be rolled back: (Yes/No)

Further comments

If this is a relatively large or complex change, kick off the discussion at [email protected] by explaining why you chose the solution you did and what alternatives you considered, etc...

[JNSimba]

Would it be best to add an ITCase, like this https://github.com/apache/doris-spark-connector/blob/master/spark-doris-connector/spark-doris-connector-it/src/test/java/org/apache/doris/spark/sql/DorisWriterITCase.scala

[kaori-seasons]

Would it be best to add an ITCase, like this https://github.com/apache/doris-spark-connector/blob/master/spark-doris-connector/spark-doris-connector-it/src/test/java/org/apache/doris/spark/sql/DorisWriterITCase.scala

Okay, I will make the changes as soon as possible.