perf: convert Symbol enum into struct

[PaoloProdossimoLopes]

Description

Please include a summary of the changes and the related issue. Please also include relevant motivation and context. List any dependencies that are required for this change.

This PR refactors the Symbol representation from a large enum to a struct, improving build times and modularity.

What's Changed:

• Replaced enum Symbol with @Frozen struct Symbol.
• Grouped symbols into extensions, with a maximum of 600 per file.
• Added detailed documentation with SF Symbol icons.
• Implemented allCases support to list all symbols.

Benefits:

• Faster build times.
• Cleaner and more maintainable structure.
• Full documentation for each symbol, with icons.

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Evidence

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