SparkSQL: Support TIMESTAMP_LTZ and TIMESTAMP_NTZ types

[padraic00]

Brief summary of the change made

Adds support for new timestamp types introduced in Spark 3.4 SPARK-35662.

Fixes #5538

Are there any other side effects of this change that we should be aware of?

Pull Request checklist

• Please confirm you have completed any of the necessary steps below.

• Included test cases to demonstrate any code changes, which may be one or more of the following:

  • .yml rule test cases in test/fixtures/rules/std_rule_cases.
  • .sql/.yml parser test cases in test/fixtures/dialects (note YML files can be auto generated with tox -e generate-fixture-yml).
  • Full autofix test cases in test/fixtures/linter/autofix.
  • Other.

• Added appropriate documentation for the change.

• Created GitHub issues for any relevant followup/future enhancements if appropriate.

[WittierDinosaur]

LGTM

[github-actions]

Coverage Results ✅

Name    Stmts   Miss  Cover   Missing
-------------------------------------
TOTAL   17551      0   100%

225 files skipped due to complete coverage.

[coveralls]

coverage: 99.985%. remained the same
when pulling 5bbf0fd on padraic00:sparksql-parse-timestamp-ntz-ltz
into fbf8fad on sqlfluff:main.