[SPARK-4625] [SQL] Add sort by for DSL & SimpleSqlParser

[chenghao-intel]

Add sort by support for both DSL & SqlParser.

This PR is relevant with #3386, either one merged, will cause the other rebased.

[SparkQA]

Test build #23896 has started for PR 3481 at commit 041004f.

• This patch merges cleanly.

[SparkQA]

Test build #23896 has finished for PR 3481 at commit 041004f.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[AmplabJenkins]

Test PASSed.
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Test PASSed.

[marmbrus]

Thanks for adding this. Merging to master.