Fix should allow using the keyword as column name

[git-hulk]

This closes #145.

[Copilot]

Pull Request Overview

This PR fixes the issue of using keywords as column names by updating the parser behavior. Key changes include:

• Adding a new function (peekKeyword) to check if the next token matches a given keyword.
• Modifying the parseColumnExpr function to parse a keyword as an identifier when followed by a comma or the AS keyword.

Files not reviewed (3)

• parser/testdata/query/format/select_with_keyword_in_group_by.sql: Language not supported
• parser/testdata/query/output/select_with_keyword_in_group_by.sql.golden.json: Language not supported
• parser/testdata/query/select_with_keyword_in_group_by.sql: Language not supported

[coveralls]

Pull Request Test Coverage Report for Build 14515538497

Details

• 14 of 14 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 62.758%

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Totals
Change from base Build 14514766397:	0.08%
Covered Lines:	6889
Relevant Lines:	10977

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💛 - Coveralls