Feat/cs/pass copy

[ReagentX]

• Pass Type u8 by value (perf ≈+2%)
• Polish some other code

[Copilot]

Pull Request Overview

This PR improves performance by passing u8 values by copy rather than by reference in the Type::from_byte method and updates iterator mapping to use .copied(). Additionally, it modernizes the codebase by replacing verbose match expressions with more concise pattern matching and improves readability of large numeric literals with underscores.

• Performance optimization by passing u8 by value instead of reference (~2% improvement)
• Code modernization using let-else pattern for cleaner early returns
• Enhanced readability with underscore separators in large numeric literals

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/models/types.rs	Changes from_byte to accept u8 by value and updates iterator to use .copied()
src/deserializer/typedstream.rs	Refactors match expression to use modern let-else pattern
src/deserializer/iter.rs	Modernizes pattern matching and adds underscores to large numeric literals

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