refactor: change zip64 parsing

[Its-Just-Nans]

Part of extra field rewrite

[amazon-q-developer]

The refactoring successfully converts the Zip64ExtendedInformation::parse method from using mutable references to returning values, improving code clarity and eliminating side effects. The changes are consistent across both files, and the logic remains functionally equivalent.

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[gemini-code-assist]

Code Review

This pull request refactors the Zip64ExtendedInformation::parse function to return updated values as a tuple instead of modifying them via mutable references, with corresponding updates to its call site in src/read/mod.rs. Feedback suggests further improving the parse function by extracting repetitive field-reading logic into a closure to reduce boilerplate and improve maintainability.