Add ENUM column

[vjik]

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	✔️

Related PRs:

• Add ENUM column db-pgsql#465
• Add ENUM column db-sqlite#404
• Add ENUM column db-mssql#415
• Add ENUM column db-mysql#448
• Add ENUM column db-oracle#382

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.62%. Comparing base (b78617d) to head (59fe5f0).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1107   +/-   ##
=========================================
  Coverage     98.62%   98.62%           
- Complexity     1648     1655    +7     
=========================================
  Files           119      120    +1     
  Lines          4283     4305   +22     
=========================================
+ Hits           4224     4246   +22     
  Misses           59       59           

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[Copilot]

Pull request overview

This PR adds a dedicated EnumColumn type to the Yii database abstraction layer, removing the generic enumValues property from the base Column class. This is a breaking change that provides better type safety and clearer API for enum columns.

Key Changes:

• Introduces EnumColumn class extending StringColumn with dedicated values() and getValues() methods
• Removes enumValues() and getEnumValues() methods from ColumnInterface and AbstractColumn
• Adds ColumnBuilder::enum() factory method for creating enum columns
• Updates AbstractColumnDefinitionBuilder to generate CHECK constraints for enum columns when dbType is null (for databases without native ENUM support)

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/Schema/Column/EnumColumn.php	New dedicated enum column class with values management
src/Schema/Column/ColumnBuilder.php	Adds enum() factory method for creating enum columns
src/Schema/Column/AbstractColumn.php	Removes generic enumValues property and methods
src/Schema/Column/ColumnInterface.php	Removes enumValues() and getEnumValues() from interface
src/Schema/Column/AbstractColumnFactory.php	Maps ColumnType::ENUM to EnumColumn class
src/Schema/Column/ColumnFactoryInterface.php	Updates psalm type to use values instead of enumValues
src/QueryBuilder/AbstractColumnDefinitionBuilder.php	Generates CHECK constraints for enum columns without dbType
src/Syntax/ColumnDefinitionParser.php	Renames enumValues to values in parser output
src/Constant/ColumnType.php	Adds ENUM constant for the enum column type
tests/Db/Schema/Column/EnumColumnTest.php	Unit tests for EnumColumn class
tests/Common/CommonEnumColumnTest.php	Integration tests for enum column functionality
tests/Provider/ColumnProvider.php	Updates test data providers for enum columns
tests/Provider/ColumnFactoryProvider.php	Adds enum column to factory type tests
tests/Provider/ColumnDefinitionParserProvider.php	Updates parser test data to use values
tests/Provider/ColumnBuilderProvider.php	Removes getEnumValues from default values test
tests/Support/IntegrationTestCase.php	Adds helper methods dropTable() and executeStatements()
tests/Db/Schema/Column/ColumnTest.php	Removes tests for deprecated enumValues methods
CHANGELOG.md	Documents the new enum column type feature

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