Add ColumnDefinitionParser class

[vjik]

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

Related to yiisoft/db#1108

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.66%. Comparing base (0f41835) to head (3c10198).

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #416      +/-   ##
============================================
+ Coverage     98.62%   98.66%   +0.03%     
- Complexity      247      249       +2     
============================================
  Files            26       27       +1     
  Lines           800      823      +23     
============================================
+ Hits            789      812      +23     
  Misses           11       11              

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[Copilot]

Pull request overview

This PR adds a ColumnDefinitionParser class for MS SQL Server to parse column type definitions and their parameters. This is part of the broader refactoring in the yiisoft/db package (related to PR #1108).

Key Changes

• Implements ColumnDefinitionParser class extending AbstractColumnDefinitionParser to handle MSSQL-specific type parameter parsing
• Integrates the parser into ColumnFactory via the columnDefinitionParser() method
• Adds test coverage through ColumnDefinitionParserTest extending common test base

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

File	Description
src/Column/ColumnDefinitionParser.php	New parser class implementing parseTypeParams() to handle size/precision/scale parsing for MSSQL column types
src/Column/ColumnFactory.php	Adds columnDefinitionParser() method to instantiate and return the new parser
tests/ColumnDefinitionParserTest.php	New test class extending common test base to verify parser functionality
CHANGELOG.md	Documents the addition of ColumnDefinitionParser class in version 2.0.0

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