Add tests for nested in select clause

[GumpacG]

Description

Added IT and parser tests for nested function calls in the select clause.

• Some of the tests fail due to incomplete implementation of aggregation.
• Some tests still need to be added for nested function calls with arrays as arguments for other functions. For example: SELECT UPPER(NESTED(message.info)) FROM nested_objects. This should be added once the expected results are determined in [DISCUSSION] Properly support array values in new engine opensearch-project/sql#1300.

Note

Workflows are failing due to POC base branch. Fixing these will be part of a different PR.
Failing workflows are expected at this stage.

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

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

Merging #222 (6ef8169) into dev-spike-nested-aggregation (cb7508d) will not change coverage.
The diff coverage is 0.00%.

@@                       Coverage Diff                       @@
##             dev-spike-nested-aggregation     #222   +/-   ##
===============================================================
  Coverage                           96.26%   96.26%           
  Complexity                           3644     3644           
===============================================================
  Files                                 348      348           
  Lines                                9227     9227           
  Branches                              605      605           
===============================================================
  Hits                                 8882     8882           
  Misses                                334      334           
  Partials                               11       11           

Flag	Coverage Δ
sql-engine	96.26% <0.00%> (ø)

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

Impacted Files	Coverage Δ
...ain/java/org/opensearch/sql/analysis/Analyzer.java	98.74% <ø> (ø)
...rg/opensearch/sql/analysis/ExpressionAnalyzer.java	100.00% <ø> (ø)
...h/sql/expression/function/BuiltinFunctionName.java	100.00% <ø> (ø)
...pensearch/sql/planner/physical/UnnestOperator.java	0.00% <ø> (ø)
.../opensearch/sql/storage/read/TableScanBuilder.java	90.00% <ø> (ø)
...l/opensearch/request/OpenSearchRequestBuilder.java	61.20% <ø> (ø)
...ch/sql/opensearch/response/OpenSearchResponse.java	44.70% <ø> (ø)
...java/org/opensearch/sql/sql/parser/AstBuilder.java	92.95% <ø> (ø)
.../opensearch/sql/sql/parser/AstUnnestedBuilder.java	50.00% <0.00%> (ø)

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[Yury-Fridlyand]

Are you adding some fixes or only tests?
BTW one of ident options is DOT? ID. This parser rule accepts field..subfield I suspect.

[forestmvey]

Good point, maybe we should add a nestedIdent rule.

[GumpacG]

I think it can be part of this PR because it is related to one of the tests not parsing for fields with opensearch function names. For example, dayOfWeek.