refactor: migrate member_ordering rule

[solid-illiaaihistov]

Closes #252

[solid-illiaaihistov]

/gemini review

[gemini-code-assist]

Code Review

This pull request refactors the member_ordering lint rule to extend SolidMultiLintRule (a new base class for rules with multiple diagnostic codes), splits several model classes into separate files, and replaces the old test file with a comprehensive unit test suite. The review feedback correctly identifies two critical compilation errors in MemberOrderingVisitor: first, the use of the non-existent BlockClassBody class, and second, attempting to access a .name property on ConstructorDeclaration.typeName (which is a Token and should use .lexeme instead).

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