Improve serialization

[gerlero]

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[Copilot]

Pull request overview

This PR improves serialization by separating normalization and serialization logic into distinct functions. The main change introduces a new normalize() function that converts Python data types into normalized internal representations before serialization, and a new parse() function that provides targeted parsing for specific types.

• Introduction of normalize() function with comprehensive pattern matching for different data types
• New parse() function for type-specific parsing (tokens, data, standalone data, files)
• Refactored dumps() function to work with pre-normalized data
• Updated grammar to export TOKEN, DATA, STANDALONE_DATA, and LOCATED_FILE

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/foamlib/_files/_serialization.py	Major refactor: added normalize() function with pattern matching for all data types, updated dumps() to work with normalized data, replaced bool_ok parameter with force_token
src/foamlib/_files/_parsing/parsed.py	Added new parse() function for type-specific parsing, updated Parsed class to use new grammar names
src/foamlib/_files/_parsing/_grammar.py	Exported grammar elements as public (TOKEN, DATA, STANDALONE_DATA, LOCATED_FILE) for use in new parse function
src/foamlib/_files/_parsing/init.py	Added parse function to public API
src/foamlib/_files/files.py	Updated to use new parse() function instead of Parsed class, changed bool_ok parameter to force_token in normalize calls
tests/test_files/test_dumps.py	Updated all tests to explicitly call normalize() before dumps(), demonstrating the new two-step serialization process

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