Add Support for Nested Function in Order By Clause

[forestmvey]

Description

Add support for nested function use in the ORDER BY clause.

Example Queries

SELECT nested(message.info) from nested_objects ORDER BY nested(message.info);

Issues Resolved

Portion of Issue: 1111

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

Merging #280 (72043d4) into integ-nested-order-by (6c3744e) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@                   Coverage Diff                    @@
##             integ-nested-order-by     #280   +/-   ##
========================================================
  Coverage                    97.29%   97.29%           
- Complexity                    4408     4415    +7     
========================================================
  Files                          388      388           
  Lines                        10944    10960   +16     
  Branches                       774      777    +3     
========================================================
+ Hits                         10648    10664   +16     
  Misses                         289      289           
  Partials                         7        7           

Flag	Coverage Δ
sql-engine	97.29% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../org/opensearch/sql/sql/parser/AstSortBuilder.java	100.00% <ø> (ø)
...va/org/opensearch/sql/analysis/NestedAnalyzer.java	100.00% <100.00%> (ø)
...earch/storage/scan/OpenSearchIndexScanBuilder.java	100.00% <100.00%> (ø)
...arch/storage/script/filter/lucene/LuceneQuery.java	100.00% <100.00%> (ø)
...ensearch/storage/script/sort/SortQueryBuilder.java	100.00% <100.00%> (ø)

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